Piston pin oil hole drilling machine

Abstract

The invention discloses a piston pin oil hole drilling machine which comprises a rack, a mounting mechanism, a lifting mechanism and a drilling mechanism, the mounting mechanism comprises a mounting seat, a fixing shaft, two limiting blocks and a pressing assembly, and a one-way locking assembly is arranged on the mounting seat; the one-way locking assembly has a one-way locking state and a non-locking state for limiting opposite movement of the two limiting blocks, a limiting component controlled by the drilling mechanism in a lifting mode is arranged on the mounting base, and the limiting component has a limiting state and a non-limiting state for limiting opposite movement of the two limiting blocks. Descending of the drilling mechanism comprises a control stroke for controlling the limiting component to be switched from the non-limiting state to the limiting state and a drilling stroke, and a control assembly used for controlling the one-way locking assembly is arranged on the mounting base. The piston mounting mechanism has the following advantages and effects that pistons of different sizes can be conveniently mounted and fixed on the mounting mechanism, so that the operation process is simplified, excessive manual work is reduced, and the machining efficiency of the pistons is improved.

Description

Technical Field

[0001] The invention relates to piston processing equipment, in particular to a piston pin oil hole drilling machine. Background Art

[0002] As a key moving component in mechanical systems like internal combustion engines and compressors, the piston's design, material selection, and operating principle directly impact the overall performance and service life of the equipment. A crucial step in piston production is drilling the oil pin hole. With the continuous advancement of technology, this process is now increasingly performed by specialized piston oil pin drilling machines.

[0003] Existing piston pin oil hole drilling machines primarily consist of a frame, a mounting mechanism mounted on the frame, a lifting mechanism mounted on the frame, and a drilling mechanism mounted on the lifting mechanism. The mounting mechanism includes a mounting base, a fixed shaft mounted on the mounting base and inserted into the piston pin hole, stop blocks movably mounted on the mounting base and located on the left and right sides of the fixed shaft, an adjustment assembly for adjusting the two stop blocks, and a clamping assembly that forces the piston to be compressed and fixed between the two stop blocks. In actual operation, the adjustment assembly must be manually operated to control the distance between the two stop blocks, thereby achieving precise positioning of pistons of different sizes. However, this manual operation method requires first installing the piston on the fixed shaft, then adaptively adjusting the positions of the two stop blocks, and then controlling the clamping assembly to compress the piston after the adjustments are completed. This entire process is not only cumbersome but also requires a high level of manual labor. This is why the present invention was developed. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston pin oil hole drilling machine, which can realize the convenient installation and fixation of pistons of different sizes on the mounting mechanism, thereby simplifying the operation process, reducing excessive manual labor, and improving the processing efficiency of the piston.

[0005] The above-mentioned technical objectives of the present invention are achieved through the following technical solutions: a piston pin oil hole drilling machine, comprising a frame, a mounting mechanism mounted on the frame, a lifting mechanism mounted on the frame, and a drilling mechanism mounted on the lifting mechanism, the mounting mechanism comprising a mounting seat, a fixed shaft arranged on the mounting seat, two limit blocks slidably arranged on the mounting seat along the horizontal direction and located on the left and right sides of the fixed shaft, and a pressing assembly, the mounting seat is provided with a one-way locking assembly, the one-way locking assembly has a one-way locking state and a non-locking state that limit the two limit blocks from moving toward each other, the mounting seat is provided with a limiting component controlled by the lifting and lowering of the drilling mechanism, the limiting component has a limiting state and a non-limiting state that limit the two limit blocks from moving away from each other, the descent of the drilling mechanism includes a control stroke and a drilling stroke for controlling the limiting component to switch from the non-limiting state to the limiting state, and the mounting seat is provided with a control component for controlling the one-way locking assembly.

[0006] By adopting the above technical solution, the piston pin hole on the piston to be processed is mounted on a fixed shaft. The piston is then pressed toward one side of the limit block by a provided clamping assembly. The compressed piston then drives the two limit blocks to move away from each other and remain in contact with the piston. Next, the drilling mechanism is driven down by a lifting mechanism. When the drilling mechanism descends to the control stroke position, the control limit member switches from a non-limiting state to a limiting state. The provided one-way locking assembly then cooperates to limit the reciprocating motion of the two limit blocks, thereby enabling the limit blocks to limit the piston being processed and prevent horizontal movement of the piston. When the drilling mechanism descends from the control stroke to the drilling stroke position, the drilling process on the piston is completed.

[0007] After the processing is completed, the drilling mechanism rises, and when it passes the control stroke position, the limiting component is switched from the limiting state to the non-limiting state, and the clamping assembly can be released to continue processing the next piston. This processing method is more suitable for the processing sequence from small-diameter pistons to large-diameter pistons. If the diameter of the next piston to be processed is smaller than the previous one, the control component is used to control the one-way locking component to switch from the one-way locking state to the non-locking state, and the two limiting blocks can be controlled to move toward each other to adapt to the small-diameter piston. This setting structure can realize the convenient installation and fixation of pistons of different sizes on the mounting mechanism, thereby simplifying the operating process, reducing excessive manual work, and improving the processing efficiency of the piston. And by adjusting the processing sequence of the piston, the processing operation of the piston can be made more convenient.

[0008] It is further configured as follows: the clamping assembly includes a clamping drive and a clamping block driven by the clamping drive, the control assembly is driven by the clamping drive, and the clamping drive includes a clamping stroke for driving the clamping block and a triggering stroke for triggering the control assembly.

[0009] By adopting the above technical solution, the control operation of the control component is set to be driven and controlled by the clamping drive member to replace manual operation, making the operation more convenient; and this setting structure does not require a separate drive source for controlling the control component, to further reduce production costs.

[0010] It is further configured as follows: a slide groove extending in the horizontal direction is provided on the mounting seat, and the two limit blocks are slidably set in the slide groove. The one-way locking assembly includes a one-way locking block rotatably set on each limit block and an elastic clamping member that drives each one-way locking block to deflect outward and press against the side wall of the slide groove. When the one-way locking block presses against the side wall of the slide groove, the two one-way locking blocks are in a symmetrical inclined state that extends towards each other and tilts toward one side of the slide groove side wall.

[0011] By adopting the above technical solution, the elastic pressing member drives the one-way locking block to always press against the side wall of the slide groove. In conjunction with setting the one-way locking block to an inclined structure, the two limit blocks can slide back to back when subjected to force, but when moving towards each other, they will be subject to resistance from the one-way locking block pressing against the side wall of the slide groove, making it impossible for the two to move towards each other.

[0012] It is further configured as follows: a side wall of the slide groove for the one-way locking block to abut against is provided with a first anti-slip pattern, and a position where each one-way locking block abuts against the slide groove side wall is provided with a second anti-slip pattern.

[0013] By adopting the above technical solution, the first anti-slip pattern and the second anti-slip pattern are provided to increase the resistance between the one-way locking block and the side wall of the slide groove, thereby achieving a more stable and stronger stepless locking purpose.

[0014] It is further configured that the control assembly includes a control block slidably arranged in a slide groove, a control rod connected to the control block and extending outward through the mounting seat, a return spring connecting the two limit blocks, and a reversing structure formed between the two one-way locking blocks and the control block.

[0015] By adopting the above technical solution, the control rod controls the movement of the control block, and then cooperates with the provided reversing structure to change the direction of the force, thereby controlling the two one-way locking blocks to move away from the side walls of the slide groove, so that the one-way locking blocks do not press against the side walls of the slide groove, thereby achieving the control purpose and allowing the two limit blocks to slide toward each other under the action of the return spring.

[0016] It is further configured that the reversing structure includes a reversing waist-shaped hole provided on the control block and extending along the sliding direction of the limit block, and a reversing rod provided on each one-way locking block and extending into the reversing waist-shaped hole.

[0017] By adopting the above technical solution, the reversing waist-shaped hole cooperates with the reversing rod structure so that the existing control block will not interfere with the movement of the one-way locking block and the limit block, and can control the one-way locking block to move against the side wall of the sliding groove.

[0018] It is further configured as follows: the limiting component includes a limiting airbag arranged on the opposite side of the two limiting blocks, two docking channels arranged on the mounting seat and corresponding to the two limiting airbags respectively, and a switching component cooperating with the drilling mechanism, the docking channel constitutes a sealed connection between the outside world and the limiting airbag, and the two limiting airbags are installed in the slide groove.

[0019] By adopting the above technical solution, the drilling mechanism cooperates with the switching component to change the direction of force, and then controls the expansion of the limiting airbag to limit the limiting block. When the limiting airbag shrinks, the limit on the limiting block can be released.

[0020] It is further configured as follows: the switching assembly includes two switching chambers arranged on the outer wall of the mounting seat and respectively connected to the two docking channels, a switching piston sealingly and slidingly arranged in each switching chamber, and two switching trigger rods that move with the drilling mechanism, and the movement paths of the two switching trigger rods intersect with the two switching pistons.

[0021] By adopting the above technical solution, the switching trigger rod moves with the drilling mechanism and presses against the switching piston to squeeze the switching chamber. As the switching chamber is squeezed, the pressure in the limiting airbag increases and expands to press against the limiting block to achieve a limiting effect; when the switching trigger rod does not squeeze the switching chamber, the pressure in the limiting airbag decreases, thereby releasing the limit on the limiting block.

[0022] It is further configured as follows: the switching trigger rod includes a fixed section and a trigger section that is telescopically slidably arranged on the fixed section, and a compensation spring is fixedly connected between the fixed section and the trigger section.

[0023] By adopting the above technical solution, the switching trigger rod is set to a telescopic pressing structure to compensate for the drilling distance required for the displacement of the drilling mechanism, thereby avoiding structural interference.

[0024] In summary, the present invention has the following beneficial effects: the present invention can realize the convenient installation and fixation of pistons of different sizes on the mounting mechanism, thereby simplifying the operating process, reducing excessive manual labor, and improving the processing efficiency of the piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of an embodiment; Figure 2 A schematic diagram of the structure of the embodiment Figure 1 ; Figure 3 A schematic diagram of the structure of the embodiment Figure 2 ; Figure 4 It is a partial structural diagram of an embodiment; Figure 5 A partial cross-sectional view of an embodiment; Figure 6 is another partial cross-sectional view of the embodiment; Figure 7 is another partial structural diagram of the embodiment; Figure 8 2 is a cross-sectional view of a control assembly in an embodiment.

[0026] In the figure: 1. Frame; 3. Mounting mechanism; 31. Mounting seat; 32. Fixed shaft; 33. Limiting block; 34. Pressing drive member; 35. Pressing block; 4. Lifting mechanism; 5. Drilling mechanism; 6. One-way locking block; 7. Limiting member; 71. Limiting airbag; 72. Docking channel; 73. Switching chamber; 74. Switching piston; 75. Trigger rod; 751. Fixed section; 752. Trigger section; 8. Control assembly; 81. Control block; 82. Control rod; 83. Return spring; 84. Reversing waist-shaped hole; 85. Reversing rod; 9. Slide groove; 11. Compensating spring; 12. Trigger rod. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] refer to Figures 1 to 8 A piston pin oil hole drilling machine includes a frame 1, a mounting mechanism 3 mounted on the frame 1, a lifting mechanism 4 mounted on the frame 1, and a drilling mechanism 5 mounted on the lifting mechanism 4. The mounting mechanism 3 includes a mounting base 31 fixedly mounted on the frame 1, a fixed shaft 32 fixedly disposed on the mounting base 31, two limit blocks 33 slidably disposed horizontally on the mounting base 31 and located on the left and right sides of the fixed shaft 32, and a clamping assembly. The mounting base 31 is provided with a one-way locking assembly, which has a one-way locking state that restricts the two limit blocks 33 from moving toward each other, and an unlocked state. The mounting base 31 is provided with a limit member 7 that is controlled by the raising and lowering of the drilling mechanism 5, which has a limit state that restricts the two limit blocks 33 from moving away from each other, and an unlocked state. The descent of the drilling mechanism 5 includes a control stroke that controls the limit member 7 to switch from the unlocked state to the limit state, as well as a drilling stroke. The mounting base 31 is provided with a control assembly 8 for controlling the one-way locking assembly.

[0029] The clamping assembly includes a clamping driver 34 and a clamping block 35 driven by the clamping driver 34. The control assembly 8 is driven by the clamping driver 34. The clamping driver 34 has a clamping stroke for driving the clamping block 35 and a trigger stroke for triggering the control assembly 8. The clamping driver 34 is a double-acting cylinder fixedly mounted on the mounting base 31. The clamping block 35 is fixedly mounted on one end of the telescopic rod of the clamping driver 34.

[0030] The mounting base 31 defines a horizontally extending slot 9, within which two limit blocks 33 are slidably mounted. The one-way locking assembly comprises a one-way locking block 6, pivotally mounted on each limit block 33 via a rotating shaft, and an elastic abutment (not shown) that drives each one-way locking block 6 outwardly and abuts against the sidewall of the slot 9. The elastic abutment is a torsion spring mounted on the rotating shaft, with its ends fixedly connecting the one-way locking block 6 to the limit block 33. When the one-way locking blocks 6 abut against the sidewall of the slot 9, the two one-way locking blocks 6 assume a symmetrically tilted state, extending toward each other and tilting toward one side of the slot 9.

[0031] A first anti-slip pattern is formed on one side of the chute 9 where the one-way locking block 6 abuts. A second anti-slip pattern is formed on the location where each one-way locking block 6 abuts against the side of the chute 9. The second anti-slip pattern and the first anti-slip pattern can be formed by rough grinding or rolling the metal surface.

[0032] The control assembly 8 includes a control block 81 that slides vertically within the slide groove 9, a control rod 82 that is integrally connected to the control block 81 and extends outward through the mounting seat 31, a return spring 83 that is fixedly connected to the two limit blocks 33, and a reversing structure formed between the two one-way locking blocks 6 and the control block 81. A trigger rod 12 is fixedly provided at the other end of the telescopic rod of the compression drive member 34. The trigger rod 12 is provided with a trigger bevel, and the control rod 82 is provided with a matching bevel that matches the trigger bevel. The trigger rod 12 drives the trigger bevel to move toward the matching bevel, and the cooperation between the trigger bevel and the matching bevel is used to drive the control block 81 to move downward. The reversing structure includes a reversing waist-shaped hole 84 that is provided in the control block 81 and extends along the sliding direction of the limit block 33, and a reversing rod 85 that is integrally provided in each one-way locking block 6 and extends into the reversing waist-shaped hole 84.

[0033] The limiting member 7 comprises limiting airbags 71 positioned on opposite sides of the two limiting blocks 33, two docking channels 72 formed in the mounting base 31 and corresponding to the two limiting airbags 71, and a switching assembly that cooperates with the drilling mechanism 5. The docking channels 72 provide sealed communication between the outside world and the limiting airbags 71. The two limiting airbags 71 are mounted within the chute 9. The limiting airbags 71 are made of rubber and are fixedly connected to the inner wall of the chute 9 near the location where they connect to the docking channels 72. The limiting airbags 71 can be filled with hydraulic oil.

[0034] The switching assembly includes two switching chambers 73 formed in the mounting base 31 and connected to the two docking passages 72, a switching piston 74 sealingly and slidably disposed within each switching chamber 73, and two switching triggering rods 75 that move with the drilling mechanism 5. The movement paths of the two switching triggering rods 75 intersect with the two switching pistons 74. The switching triggering rods 75 include a fixed section 751 and a triggering section 752 that is telescopically slidable within the fixed section 751. A compensation spring 11 is fixedly connected between the fixed section 751 and the triggering section 752.

[0035] Both the lifting mechanism 4 and the drilling mechanism 5 are prior art and are outside the scope of protection of this application. The lifting mechanism 4 comprises a lifting base fixedly mounted on the frame 1, a lifting screw rotatably mounted on the lifting base, a motor that drives the lifting screw, and a lifting slide slidably mounted on the lifting base and threadedly connected to the lifting screw. The drilling mechanism 5 is a bench drill fixedly mounted on the lifting slide, with the fixed section 751 fixedly connected to the bench drill.

[0036] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A piston pin oil hole drilling machine, comprising a frame (1), a mounting mechanism (3) mounted on the frame (1), a lifting mechanism (4) mounted on the frame (1), and a drilling mechanism (5) mounted on the lifting mechanism (4), wherein the mounting mechanism (3) comprises a mounting seat (31), a fixed shaft (32) arranged on the mounting seat (31), two limit blocks (33) slidably arranged on the mounting seat (31) in a horizontal direction and respectively located on the left and right sides of the fixed shaft (32), and a pressing assembly, characterized in that: The mounting seat (31) is provided with a one-way locking assembly, the one-way locking assembly having a one-way locking state for limiting the two limit blocks (33) from moving toward each other and a non-locking state. The mounting seat (31) is provided with a limiting member (7) controlled by the lifting and lowering of the drilling mechanism (5), the limiting member (7) having a limiting state for limiting the two limit blocks (33) from moving away from each other and a non-limiting state. The descent of the drilling mechanism (5) includes a control stroke for controlling the limiting member (7) to switch from the non-limiting state to the limiting state and a drilling stroke. The mounting seat (31) is provided with a control assembly (8) for controlling the one-way locking assembly.

2. The piston pin oil hole drilling machine according to claim 1, characterized in that: The clamping assembly includes a clamping drive (34) and a clamping block (35) driven by the clamping drive (34); the control assembly (8) is driven by the clamping drive (34); and the clamping drive (34) includes a clamping stroke for driving the clamping block (35) and a triggering stroke for triggering the control assembly (8).

3. The piston pin oil hole drilling machine according to claim 1, characterized in that: The mounting seat (31) is provided with a slide groove (9) extending in the horizontal direction, and the two limit blocks (33) are both slidably set in the slide groove (9). The one-way locking assembly includes a one-way locking block (6) rotatably set on each limit block (33) and an elastic pressing member that drives each one-way locking block (6) to deflect outward and press against the side wall of the slide groove (9). When the one-way locking block (6) presses against the side wall of the slide groove (9), the two one-way locking blocks (6) are in a symmetrical tilted state of extending toward each other and tilting toward one side of the side wall of the slide groove (9).

4. The piston pin oil hole drilling machine according to claim 3, characterized in that: A side wall of the slide groove (9) for the one-way locking block (6) to abut against is provided with a first anti-slip pattern, and a position where each one-way locking block (6) abuts against the side wall of the slide groove (9) is provided with a second anti-slip pattern.

5. The piston pin oil hole drilling machine according to claim 4, characterized in that: The control assembly (8) comprises a control block (81) slidably arranged in a slide groove (9), a control rod (82) connected to the control block (81) and extending outward through the mounting seat (31), a return spring (83) connecting two limit blocks (33), and a reversing structure formed between the two one-way locking blocks (6) and the control block (81).

6. The piston pin oil hole drilling machine according to claim 5, characterized in that: The reversing structure comprises a reversing waist-shaped hole (84) provided on the control block (81) and extending along the sliding direction of the limit block (33), and a reversing rod (85) provided on each one-way locking block (6) and extending into the reversing waist-shaped hole (84).

7. The piston pin oil hole drilling machine according to claim 3, characterized in that: The limiting member (7) comprises a limiting airbag (71) arranged on the opposite side of the two limiting blocks (33), two docking channels (72) arranged on the mounting seat (31) and corresponding to the two limiting airbags (71) respectively, and a switching component cooperating with the drilling mechanism (5), wherein the docking channel (72) forms a sealed communication between the outside and the limiting airbag (71), and the two limiting airbags (71) are installed in the slide groove (9).

8. The piston pin oil hole drilling machine according to claim 7, characterized in that: The switching assembly comprises two switching chambers (73) arranged on the outer wall of the mounting seat (31) and respectively connected to the two docking channels (72), a switching piston (74) sealingly and slidingly arranged in each switching chamber (73), and two switching trigger rods (75) moving with the drilling mechanism (5), wherein the movement paths of the two switching trigger rods (75) intersect with the two switching pistons (74).

9. The piston pin oil hole drilling machine according to claim 8, characterized in that: The switching trigger rod (75) comprises a fixed section (751) and a trigger section (752) telescopically slidably arranged on the fixed section (751), and a compensation spring (11) is fixedly connected between the fixed section (751) and the trigger section (752).

Images