Automatic cleaning system for tool clamping cavity

Abstract

The utility model discloses an automatic tool clamping cavity cleaning system which comprises a pull sleeve, a pull rod, a core sleeve and a conical clamping sleeve used for clamping a long shaft portion of a crankshaft, the front end portion of the pull sleeve is connected with the rear end portion of the conical clamping sleeve, the front end portion of the pull rod is connected with the rear end portion of the pull sleeve in a sliding and buckling mode, the core sleeve is arranged in the pull sleeve in a matched mode, and a pull rod vent hole is formed in the pull rod. The pull rod ventilation hole axially penetrates through the pull rod, the front end of the pull rod ventilation hole is communicated with the pull sleeve, an insertion groove is formed in the core sleeve, a positioning piece used for being connected with the rear end of the long shaft part of the crankshaft in an inserted mode is arranged in the insertion groove, peripheral ventilation holes are formed in the core sleeve and distributed in the two sides of the positioning piece, and the rear portion of the conical clamping sleeve is communicated with the pull rod ventilation hole through the peripheral ventilation holes; and the electromagnetic valve is connected with the pull rod vent hole through the air injection connector. According to the utility model, the crankshaft can be stably clamped, and the positioning accuracy of the conical clamping sleeve on the long shaft part can be improved, so that the product quality of the crankshaft can be improved.

Description

Technical Field

[0001] The utility model relates to the field of crankshaft turning equipment, in particular to an automatic cleaning system for a tooling clamping cavity. Background Art

[0002] At present, the crankshaft of the compressor includes a long axis portion, a short axis portion and an eccentric shaft ring portion. The eccentric shaft ring portion is arranged between the long axis portion and the short axis portion. A turning equipment is now used to perform an external turning process on the eccentric shaft ring portion. The turning equipment is provided with a tapered sleeve, an eccentric seat, a pull rod, a pull sleeve, a core sleeve and a positioning piece. The outer side of the front end portion of the tapered sleeve is formed with an outer conical surface that gradually shrinks from front to back, and the eccentric seat is formed with an inner conical surface that adapts to the above-mentioned outer conical surface. The pull rod is connected to the rear end of the tapered sleeve through the pull sleeve, and the positioning piece is installed in the core sleeve. The core sleeve is arranged in the pull sleeve. A spline is formed at the front end of the positioning piece. A notch is formed at the rear end of the long axis portion of the crankshaft. The notch is aligned with the eccentric shaft ring portion. The manipulator inserts the crankshaft backward into the tapered sleeve, and the spline is relatively inserted into the notch so that the axis of the eccentric shaft ring portion coincides with the rotation axis of the main shaft of the turning equipment. Then the pull rod is moved backward, and the pull rod pulls the tapered sleeve backward. Through the above-mentioned internal The relative squeezing effect of the conical surfaces causes the front end of the tapered sleeve to elastically contract and clamp the long axis of the crankshaft (the front end of the tapered sleeve is formed with circumferentially distributed grooves), and the turning equipment drives the crankshaft to rotate around the axis of the eccentric shaft ring, so that the outer cylindrical surface of the eccentric shaft ring can be turned. After turning, the pull rod moves forward to drive the tapered sleeve forward, and the front end of the tapered sleeve elastically resets and opens, and the manipulator takes the crankshaft out of the tapered sleeve; however, since there may be scattered debris left on the long axis, the above-mentioned debris is transferred to the tapered sleeve, or cutting chips fall into the front end entrance of the tapered sleeve during the turning process, in the mass production process, it is possible to cause debris or cutting chips to accumulate in the tapered sleeve, which causes the debris to be clamped between the long axis and the tapered sleeve, resulting in unstable clamping of the long axis and low radial positioning accuracy of the long axis, affecting the product quality of the crankshaft, so it is necessary to provide a structure that can effectively clean the inner cavity of the tapered sleeve. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automatic cleaning system for a fixture clamping cavity, which is beneficial to improving the product quality of the crankshaft.

[0004] The purpose of this utility model is achieved through the following technical solutions.

[0005] The utility model discloses an automatic cleaning system for a tool clamp cavity, comprising a pull sleeve, a pull rod, a core sleeve and a tapered sleeve for clamping the long axis portion of a crankshaft, the front end portion of the pull sleeve is connected to the rear end portion of the tapered sleeve, the front end portion of the pull rod is slidably engaged with the rear end portion of the pull sleeve, and the core sleeve is adapted to be arranged in the pull sleeve, wherein the pull rod is formed with a pull rod air vent, the pull rod air vent axially passes through the pull rod, the front end of the pull rod air vent is connected to the pull sleeve, the core sleeve is formed with a slot, a positioning piece for inserting the rear end portion of the long axis portion of the crankshaft is provided in the slot, the core sleeve is formed with an outer vent, the outer vents are distributed on both sides of the positioning piece, and the rear part of the tapered sleeve is connected to the pull rod air hole through the outer vent; and further comprising a solenoid valve and a jet connector, the solenoid valve being connected to the pull rod air hole through the jet connector.

[0006] Preferably, the core sleeve is formed with a central vent hole, and the slot passes through the central vent hole.

[0007] Preferably, a sliding buckle groove is formed at the rear end of the pull sleeve, and the sliding buckle groove forms a buckle groove bottom surface. The front end of the pull rod is provided with a buckle head, the pull rod vent passes through the buckle head, and the front end surface of the buckle head is in contact with the buckle groove bottom surface.

[0008] Preferably, an air guide bell mouth is formed at the rear end of the peripheral vent hole.

[0009] Preferably, the automatic cleaning system of the tooling clamp cavity of the present invention also includes a rotating oil cylinder and a rotating joint. The rotating oil cylinder drives the pull rod to move forward and backward. The rotating oil cylinder is provided with a hollow piston rod. The front end of the hollow piston rod is connected to the rear end of the pull rod vent. The rotating joint is connected to the rotating oil cylinder through an oil circuit. An air inlet interface is formed at the rear end of the rotating joint. The air inlet interface is connected to the rear end of the hollow piston rod, and the jet joint is installed on the air inlet interface.

[0010] Compared with the prior art, the utility model has the following beneficial effects: a pull rod air vent is formed by arranging a pull rod, the pull rod air vent axially passes through the pull rod, the front end of the pull rod air vent is connected to the pull sleeve, a core sleeve is formed with a slot, a positioning piece for inserting the rear end of the long axis of the crankshaft is provided in the slot, the core sleeve is formed with a peripheral air vent, the peripheral air vents are distributed on both sides of the positioning piece, and the rear part of the conical sleeve is connected to the pull rod air hole through the peripheral air vent; it also includes a solenoid valve and a jet connector, the solenoid valve is connected to the pull rod air hole through the jet connector, so that the inner cavity of the conical sleeve can be cleaned, which is beneficial to improving the product quality of the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structural diagram of the tooling clamp cavity automatic cleaning system and crankshaft combination as viewed from the right side of the present invention.

[0012] Figure 2 for Figure 1 Schematic diagram of the local structure at point A.

[0013] Figure 3 To correspond Figure 2 Schematic diagram of the structure without the crankshaft removed.

[0014] Figure 4 for Figure 1 Schematic diagram of the local structure at point B.

[0015] Figure 5 It is a schematic top view of the structure of the pull sleeve and pull rod combination of the present utility model.

[0016] Figure 6 It is a schematic diagram of the top structure of the pull sleeve of the utility model.

[0017] Figure 7 This is a rear perspective structural diagram of the core sleeve of the present invention.

[0018] Figure 8 It is a rear perspective structural diagram of the positioning piece of the present invention.

[0019] Explanation of reference numerals: eccentric seat 1; tapered sleeve 2; pulling sleeve 3; sliding buckle groove 301; buckle groove bottom surface 3011; pull rod 4; buckle head 41; pull rod vent 401; rotary oil cylinder 5; hollow piston rod 51; rotary joint 6; inner core 60; first oil through interface 601; second oil through interface 602; air inlet interface 603; jet joint 7; core sleeve 8; slot 801; central vent 802; peripheral vent 803; air guide bell mouth 8031; mounting screw hole 804; positioning piece 9; gearing 91; crankshaft 99; eccentric shaft ring portion 991; long shaft portion 992. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The automatic cleaning system of the fixture cavity of the utility model is as follows: Figure 1 and Figure 2 As shown, it includes a pull sleeve 3, a pull rod 4, a core sleeve 8 and a tapered sleeve 2 for clamping the long axis portion 992 of the crankshaft 99. The front end of the pull sleeve 3 is connected to the rear end of the tapered sleeve 2. Specifically, the front end of the pull sleeve 3 is coaxially screwed to the rear end of the tapered sleeve 2, the front end of the pull rod 4 is slidably buckled to the rear end of the pull sleeve 3, and the core sleeve 8 is adapted to be arranged in the pull sleeve 3. Figure 1 and Figure 2As shown, the pull rod 4 is formed with a pull rod vent 401, and the pull rod vent 401 axially passes through the pull rod 4. In other words, the pull rod vent 401 is connected from the rear end of the pull rod 4 to the front end of the pull rod 4, and the front end of the pull rod vent 401 is connected to the pull sleeve 3. In other words, the part of the pull sleeve 3 for buckling the pull rod 4 is connected to the inner cavity of the pull sleeve 3; Figure 7 As shown, the core sleeve 8 is formed with a slot 801, and a positioning piece 9 for inserting the rear end of the long axis portion 992 of the crankshaft 99 is provided in the slot 801. The positioning piece 9 is inserted into the slot 801 from front to back. The width of the slot 801 is adapted to the thickness of the positioning piece 9. The core sleeve 8 is formed with a mounting screw hole 804 extending radially. A set screw is installed in the mounting screw hole 804. The end of the set screw is pressed against one side of the positioning piece 9, thereby fixing the positioning piece 9 and the core sleeve 8 relatively. Figure 7 As shown, the core sleeve 8 is formed with peripheral vent holes 803, which are distributed on both sides of the positioning piece 9. The number of peripheral vent holes 803 can be set to four. The rear portion of the cone sleeve 2 is connected to the tie rod vent hole 401 through the peripheral vent holes 803. The automatic cleaning system for the tooling clamp cavity of the present invention also includes a solenoid valve and an air jet connector 7. The solenoid valve is connected to the tie rod vent hole 401 via the air jet connector 7. The compressed air source is connected to the air jet connector 7 through the solenoid valve. The air jet connector 7 can be connected to the solenoid valve via a soft air tube.

[0022] The following briefly describes the working principle of the automatic cleaning system for fixture clamping cavity of the utility model: Figure 2 As shown, when turning a crankshaft 99 is completed, the crankshaft 99 is taken forward to remove the tapered sleeve 2, and the notch groove at the rear end of the long axis 992 of the crankshaft 99 leaves the slotting gear 91 of the positioning plate 9 (as shown in FIG. Figure 8 ), open the solenoid valve, so that the compressed air passes through the solenoid valve to the jet connector 7, as shown Figure 3 As shown, the jet joint 7 sprays compressed air into the pull rod vent 401, and the airflow passes through the pull rod vent 401 to reach the rear inner part of the pull sleeve 3, and then the airflow passes through the outer vent 803 through the pull sleeve 3 to reach the rear part of the tapered sleeve 2. The airflow strongly flushes the inner cavity of the tapered sleeve 2 (i.e., the tooling clamping cavity), and then the airflow is discharged through the front port of the tapered sleeve 2, so that the debris in the front part of the pull sleeve 3 and the tapered sleeve 2 is blown out of the tapered sleeve 2 by the airflow, which can prevent the debris from affecting the clamping of the next crankshaft 99, which is beneficial to the stable clamping of the crankshaft 99 and the improvement of the positioning accuracy of the tapered sleeve 2 to the long axis portion 992, thereby improving the product quality of the crankshaft.

[0023] Furthermore, if Figure 7As shown, the core sleeve 8 is formed with a central air vent 802, and the slot 801 passes through the central air vent 802. In other words, the slot 801 passes through the diameter position of the central air vent 802, so that the air flow can flow through the central air vent 802 to the front of the pull sleeve 3 (the air flow flows through both sides of the positioning piece 9). The above arrangement is conducive to increasing the cross-sectional area of ​​the clean air flow, which is conducive to the air flow flushing the positioning piece 9. Combined with the peripheral air vent 803, the core sleeve 8 can spray multiple dispersed clean air flows forward.

[0024] Furthermore, if Figure 6 As shown, the rear end of the pull sleeve 3 is formed with a slide buckle groove 301, and the slide buckle groove 301 is formed with a buckle groove bottom surface 3011, that is, the buckle groove bottom surface 3011 is located at the front end of the slide buckle groove 301, as shown in FIG. Figure 2 and Figure 5 As shown, the front end of the pull rod 4 is provided with a buckle 41, and the buckle 41 can be installed on the front end of the pull rod 4 by screws. The pull rod vent 401 passes through the buckle 41, and the front end face of the buckle 41 is against the bottom surface 3011 of the connecting buckle groove. That is to say, the buckle 41 is slidably buckled in the sliding buckle groove 301. Since the inner cavity of the pull sleeve 3 is connected to the bottom surface 3011 of the buckle groove, and the front end face of the buckle 41 is against the bottom surface 3011 of the connecting buckle groove, the amount of air leakage between the bottom surface 3011 of the buckle groove and the front end face of the buckle 41 can be reduced.

[0025] Furthermore, if Figure 7 As shown, an air guide bell mouth 8031 ​​is formed at the rear end of the peripheral air vent 803. In other words, the air guide bell mouth 8031 ​​is a conical mouth that gradually increases from front to back. The air guide bell mouth 8031 ​​can guide the airflow behind the peripheral air vent 803 into the peripheral air vent 803, which is conducive to reducing wind resistance.

[0026] Furthermore, if Figure 1 As shown, the automatic cleaning system of the tooling clamp cavity of the present invention also includes a rotating cylinder 5 and a rotating joint 6. The rotating cylinder 5 drives the pull rod 4 to move forward and backward. The rotating cylinder 5 is provided with a hollow piston rod 51, that is, a circular air duct is formed at the axis of the hollow piston rod 51, and the front end of the hollow piston rod 51 is connected to the rear end of the pull rod vent 401. The rotating joint 6 is connected to the rotating cylinder 5 through an oil circuit, and an air inlet interface 603 is formed at the rear end of the rotating joint 6. The air inlet interface 603 is connected to the rear end of the hollow piston rod 51, and the jet joint 7 is installed on the air inlet interface 603, so that compressed air is transported to the jet joint 7, and the jet joint 7 sprays air into the hollow piston rod 51, and the air flow is then input into the rear end of the pull rod vent 401; by setting the hollow piston rod 51, it is beneficial for the air flow ejected by the jet joint 7 to reach the pull rod vent 401 along a relatively short path.

[0027] like Figure 1As shown, for example, the motor assembly includes a rotor and a stator. The rotor is relatively fixed on the outside of the pull rod 4, and the stator is arranged on the outside of the rotor. When the motor assembly is working, the pull rod 4 rotates, and the pull rod 4 drives the pull sleeve 3 to rotate through the buckle head 41. The pull sleeve 3 drives the cone sleeve 2 and the core sleeve 8 to rotate synchronously, thereby causing the crankshaft 99 to rotate around the axis of the eccentric shaft ring 991. Among them, the inner conical surface inside the eccentric seat 1 and the pull rod 4 are eccentrically arranged, that is, the cone sleeve 2, the pull sleeve 3 and the core sleeve 8 are all eccentrically arranged with the pull rod 4. Since the buckle head 41 can slide and adjust its position relative to the slide buckle groove 301 along the radial direction of the pull sleeve 3, when the eccentric seat 1 adjusts the eccentricity, the relative position of the buckle head 41 and the slide buckle groove 301 in the radial direction of the pull sleeve 3 changes accordingly. Figure 1 In the structure shown in the example, the rotary cylinder 5 can rotate along with the pull rod 4, but the cylinder body of the rotary cylinder 5 is axially positioned, that is, the cylinder body of the rotary cylinder 5 cannot move forward or backward. Figure 4 As shown, the rear end of the pull rod 4 is screwed into the front end of the hollow piston rod 51, and the outer shell of the rotary joint 6 is stationary, so the jet joint 7 will not rotate. The inner core 60 of the rotary joint 6 is rotatably connected to the outer shell of the rotary joint 6, so the inner core 60 of the rotary joint 6 can be relatively fixed with the cylinder body of the rotary cylinder 5. The rotary joint 6 is provided with a first oil through interface 601 and a second oil through interface 602. The first oil through interface 601 is connected to the front side of the piston of the rotary cylinder 5, and the second oil through interface 602 is connected to the active side of the rotary cylinder 5. On the rear side of the plug, the inner core 60 is formed with a center hole, the rear end of the above-mentioned center hole is connected to the air inlet interface 603, and the front end of the above-mentioned center hole is connected to the rear end of the hollow piston rod 51, so the air flow ejected forward by the jet connector 7 passes through the above-mentioned center hole and the hollow piston rod 51 in a straight line; when the hollow piston rod 51 moves back and forth, the hollow piston rod 51 drives the pull rod 4 to move back and forth accordingly, and a guide structure is provided between the piston of the rotating cylinder 5 and the cylinder body of the rotating cylinder 5 to prevent the cylinder body of the rotating cylinder 5 and the hollow piston rod 51 from rotating relative to each other.

Claims

1. An automatic cleaning system for a tooling clamp cavity, comprising a pull sleeve (3), a pull rod (4), a core sleeve (8), and a tapered sleeve (2) for clamping the long axis portion (992) of a crankshaft (99), wherein the front end of the pull sleeve (3) is connected to the rear end of the tapered sleeve (2), the front end of the pull rod (4) is slidably engaged with the rear end of the pull sleeve (3), and the core sleeve (8) is adapted to be arranged in the pull sleeve (3), characterized in that: The pull rod (4) is formed with a pull rod vent (401), the pull rod vent (401) axially passes through the pull rod (4), the front end of the pull rod vent (401) is connected to the pull sleeve (3), the core sleeve (8) is formed with a slot (801), a positioning piece (9) for inserting the rear end of the long axis (992) of the crankshaft (99) is provided in the slot (801), the core sleeve (8) is formed with an outer vent (803), the outer vent (803) is distributed on both sides of the positioning piece (9), and the rear part of the conical sleeve (2) is connected to the pull rod vent (401) through the outer vent (803); and it also includes a solenoid valve and an air jet connector (7), the solenoid valve is connected to the pull rod vent (401) through the air jet connector (7).

2. The automatic cleaning system for tooling clamping chamber according to claim 1, characterized in that: The core sleeve (8) is formed with a central vent hole (802), and the slot (801) passes through the central vent hole (802).

3. The automatic cleaning system for tooling clamping chamber according to claim 2, characterized in that: The rear end of the pull sleeve (3) is formed with a sliding buckle groove (301), and the sliding buckle groove (301) is formed with a buckle groove bottom surface (3011). The front end of the pull rod (4) is provided with a buckle head (41), the pull rod vent (401) passes through the buckle head (41), and the front end surface of the buckle head (41) is in contact with the buckle groove bottom surface (3011).

4. The automatic cleaning system for tooling clamping chamber according to claim 3, characterized in that: An air guide bell mouth (8031) is formed at the rear end of the peripheral vent hole (803).

5. The automatic cleaning system for tooling clamping chamber according to claim 1, characterized in that: The utility model further comprises a rotating oil cylinder (5) and a rotating joint (6), wherein the rotating oil cylinder (5) drives the pull rod (4) to move forward and backward, the rotating oil cylinder (5) is provided with a hollow piston rod (51), the front end of the hollow piston rod (51) is connected to the rear end of the pull rod vent hole (401), the rotating joint (6) is connected to the rotating oil cylinder (5) through an oil circuit, and an air inlet interface (603) is formed at the rear end of the rotating joint (6), the air inlet interface (603) is connected to the rear end of the hollow piston rod (51), and the air jet joint (7) is installed on the air inlet interface (603).

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