A device for tapping threads on the cylinder face of a crankcase

Abstract

The utility model discloses a crankcase drill cylinder face thread tapping device, including the workstation, the one side of workstation is provided with the conveyer belt, is provided with first baffle and second baffle on the conveyer belt, is provided with the drilling station and the tapping station on the upper surface of workstation, and the drilling station includes the punching equipment and the clamping assembly for fixing the part body position, and the tapping station includes the tapping assembly and the clamping assembly for fixing the part body position, the utility model discloses a conveyer belt transport part body in turn through the drilling station and the tapping station, and mechanical arm in turn catches part body and carries out the punching operation in the drilling station, carries out tapping operation in the tapping station, finally, mechanical arm places the part body of processing completion on the conveyer belt, and the conveyer belt transports part body to the next process, realizes the automatic continuous drilling and tapping operation, reduces the labor intensity of personnel, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of crankcase machining, and in particular to a crankcase drilling and tapping device for cylinder surfaces. Background Technology

[0002] The crankcase is one of the core components of a refrigerator compressor. Located in the middle of the compressor cavity, it mainly supports moving components such as the crankshaft and piston, and forms a sealed space to hold lubricating oil. Its structure needs to have high strength, high rigidity and heat resistance, and it is usually made of cast iron. The cylinder surface refers to the precision-machined surface where the crankcase and cylinder block meet. Its flatness and roughness directly affect the cylinder sealing performance and engine performance. The holes to be machined on the crankcase mainly include main bearing holes, bolt holes and oil passage holes.

[0003] The bolt holes on crankcase parts require tapping. Currently, the parts to be processed rely on manual adjustment of their position and then fixation using a clamping assembly. At this time, the bolt holes to be tapped are aligned with the thread drill bit above, and then the rotating thread drill bit descends to tap the parts. For parts with multiple holes, the threads in multiple holes need to be formed sequentially, resulting in low processing efficiency. To address this issue, a crankcase drilling and tapping device is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a crankcase drilling and tapping device to solve the problem mentioned in the background art that when dealing with multi-hole parts, the threads in multiple holes need to be formed sequentially, resulting in low part processing efficiency. The technical solution of this utility model provides a solution that is significantly different from the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A crankcase drilling and tapping device includes a worktable, characterized in that: a conveyor belt is provided on one side of the worktable, and a first baffle and a second baffle are provided on the conveyor belt; a drilling station and a tapping station are provided on the top of the worktable; the drilling station includes a drilling device and a clamping assembly for fixing the position of the part body; the tapping station includes a tapping assembly and a clamping assembly for fixing the position of the part body; a second base is provided at the lower part of the tapping assembly; a gearbox and a fixed seat are provided above the second base for transmitting power to the thread drill bit; a drive assembly for driving the internal gears of the gearbox to rotate is provided above the fixed seat; a transmission rod is provided inside the fixed seat; and a first gear set and a second gear set are provided inside the gearbox.

[0007] Preferably, the clamping assembly includes a rubber block, a pressure plate, a cylinder, a mounting platform, and a first base. The two ends of the pressure plate are connected to the rubber block and the cylinder, respectively. The part body is placed on the mounting platform, the mounting platform is fixed on the first base, and the first base is fixed on the worktable.

[0008] Preferably, the drive assembly includes a motor, a drive wheel, a belt, a driven wheel, and a limiting ring. The motor is mounted above the fixed base via a bracket. The drive wheel is connected to the motor shaft. The drive wheel and the driven wheel are connected via a belt. The rotatable driven wheel is mounted on the side of the fixed base via a limiting ring.

[0009] Preferably, a slide rail is provided on the top of the second base, and the bottom of the gearbox is connected to the slide rail via a slider. A partition is provided inside the gearbox, and one side of the partition is connected to the gearbox via a crossbar. A boss is provided on the other side of the partition. One end of the transmission rod extends into the inside of the gearbox and is connected to the boss bearing. The other end of the transmission rod is provided with a threaded wall, and the driven wheel is threadedly connected to the threaded wall.

[0010] Preferably, a bushing is provided on the outside of the transmission rod, the bushing is slidably connected to the fixed seat, a support block is provided on the side of the fixed seat, the support block is sleeved on the bushing, and telescopic rods are provided on both sides of the fixed seat, the telescopic rods are connected to the fixed seat, and the piston rod inside the telescopic rod is connected to the support block.

[0011] Preferably, the first gear set includes a first gear, a second gear, a third gear, a fourth gear, a fifth gear, and a sixth gear; the second gear set includes a power gear, a first transmission gear, and a second transmission gear; the transmission rod is connected to the power gear; and both the first transmission gear and the second transmission gear mesh with the power gear.

[0012] Preferably, the first transmission gear is connected to the first gear shaft, the second and third gears are both meshed with the first gear, the second transmission gear is connected to the sixth gear shaft, the fourth and fifth gears are both meshed with the sixth gear, and the second, third, fourth and fifth gears are respectively connected to the four threaded drill bit shafts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a transmission belt to sequentially drive the part body through a drilling station and a tapping station. Along the direction of the part body's movement, when the part body contacts the second baffle, a robotic arm picks it up and places it at the drilling station for drilling. The robotic arm then places the drilled part body onto the conveyor belt between the second and first baffles. When the part body contacts the first baffle on the transmission belt, the robotic arm picks it up and places it at the tapping station for thread tapping. The robotic arm then picks up the processed part body again and places it onto the conveyor belt on one side of the first baffle. The conveyor belt transports the part body to the next process, achieving automated continuous drilling and tapping operations, reducing the labor intensity of personnel. Simultaneously, after the drilling equipment creates four holes on the part body, the tapping assembly simultaneously taps threads inside all four holes, achieving one-time thread forming of the four internal holes on the part body, thus improving the processing efficiency of the part body. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main structure of the crankcase drilling and tapping device;

[0016] Figure 2 A schematic diagram of the thread-tapping assembly in a crankcase drilling and tapping device;

[0017] Figure 3 A schematic diagram of the gearbox structure in the crankcase drilling and tapping device;

[0018] Figure 4 This is a schematic diagram of the first gear set in the crankcase drilling and tapping device.

[0019] In the diagram: 1. Conveyor belt; 101. First baffle; 102. Second baffle; 2. Workbench; 3. Drilling equipment; 4. Tapping assembly; 5. Part body; 501. Rubber block; 502. Pressure plate; 503. Cylinder; 504. Mounting platform; 505. First base; 6. Second base; 7. Gearbox; 701. Partition; 702. Crossbar; 703. Boss; 704. Slide rail; 705. Slider; 8. Motor; 801. Drive wheel; 802. Belt; 803. Driven wheel; 804. 9. Limiting ring; 10. Fixed seat; 11. Transmission rod; 12. Threaded wall; 13. Bushing; 14. Support block; 15. Telescopic rod; 16. First gear set; 17. First gear; 18. Second gear; 19. Third gear; 10. Fourth gear; 10. Fifth gear; 11. Sixth gear; 12. Second gear set; 13. Power gear; 14. First transmission gear; 15. Second transmission gear; 16. Threaded drill bit. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 In this utility model, a crankcase drilling and tapping device includes a worktable 2, a conveyor belt 1 on one side of the worktable 2, a first baffle 101 and a second baffle 102 on the conveyor belt 1, a drilling station and a tapping station on the top of the worktable 2, the drilling station includes a drilling device 3 and a clamping assembly for fixing the position of the part body 5, the tapping station includes a tapping assembly 4 and a clamping assembly for fixing the position of the part body 5, a second base 6 is provided at the lower part of the tapping assembly 4, a gearbox 7 for transmitting power to the thread drill bit 13 and a fixed seat 9 are provided above the second base 6, a driving assembly for driving the internal gears of the gearbox 7 to rotate is provided above the fixed seat 9, a transmission rod 10 is provided inside the fixed seat 9, and a first gear set 11 and a second gear set 12 are provided inside the gearbox 7.

[0024] Example 1: Please refer to Figure 1-4 In this embodiment of the utility model, a crankcase drilling and tapping device for cylinder surfaces includes a clamping assembly comprising a rubber block 501, a pressure plate 502, a cylinder 503, a mounting platform 504, and a first base 505. The two ends of the pressure plate 502 are respectively connected to the rubber block 501 and the cylinder 503. The part body 5 is placed on the mounting platform 504, and the mounting platform 504 is fixed on the first base 505. The first base 505 is fixed on the worktable 2. The cylinder 503 is a corner-pressing cylinder.

[0025] Position sensors are installed on the top of the first baffle 101 and the second baffle 102. Along the direction of movement of the part body 5 on the conveyor belt 1, when the part body 5 contacts the second baffle 102, the robotic arm (not shown in the figure) grabs the part body 5 onto the clamping assembly on one side of the drilling device 3. The drilling device 3 drills bolt holes in the part body 5. Then the robotic arm places the drilled part body 5 onto the conveyor belt 1 between the first baffle 101 and the second baffle 102. When the part body 5 contacts the first baffle 101 on the conveyor belt 1, the robotic arm grabs the drilled part body 5 onto the clamping assembly on one side of the tapping assembly 4. The tapping assembly 4 performs tapping operations. Finally, the robotic arm grabs the processed part body 5 onto the conveyor belt 1 on one side of the first baffle 101. The conveyor belt 1 transports the part body 5 to the next process, thereby realizing automated continuous drilling and tapping operations, reducing the labor intensity of personnel, and improving work efficiency.

[0026] Example 2: Please refer to Figure 1-4 The difference from Embodiment 1 is that: the first gear set 11 includes a first gear 1101, a second gear 1102, a third gear 1103, a fourth gear 1104, a fifth gear 1105, and a sixth gear 1106; the second gear set 12 includes a power gear 1201, a first transmission gear 1202, and a second transmission gear 1203; the transmission rod 10 is connected to the power gear 1201; both the first transmission gear 1202 and the second transmission gear 1203 mesh with the power gear 1201; the first transmission gear 1202 is connected to the shaft of the first gear 1101; both the second gear 1102 and the third gear 1103 mesh with the first gear 1101; the second transmission gear 1203 is connected to the shaft of the sixth gear 1106; both the fourth gear 1104 and the fifth gear 1105 mesh with the sixth gear 1106; and the second gear 1102, the third gear 1103, the fourth gear 1104, and the fifth gear 1105 are respectively connected to the shafts of four threaded drill bits 13.

[0027] After the transmission rod 10 drives the power gear 1201 to rotate, the power gear 1201 simultaneously drives the first transmission gear 1202 and the second transmission gear 1203 to rotate. The first transmission gear 1202 then drives the first gear 1101, the second gear 1102 and the third gear 1103 to rotate. The second transmission gear 1203 then drives the fourth gear 1104, the fifth gear 1105 and the sixth gear 1106 to rotate. Finally, the second gear 1102, the third gear 1103, the fourth gear 1104 and the fifth gear 1105 respectively drive the four thread drill bits 13 to rotate simultaneously.

[0028] The second base 6 is provided with a slide rail 704 on its upper part. The gearbox 7 is connected to the slide rail 704 at its lower part via a slider 705. The gearbox 7 is provided with a partition 701 inside. One side of the partition 701 is connected to the gearbox 7 via a crossbar 702. The other side of the partition 701 is provided with a boss 703. One end of the transmission rod 10 extends into the interior of the gearbox 7 and is connected to the boss 703 via a bearing. The other end of the transmission rod 10 is provided with a threaded wall 1001. The driven wheel 803 is threadedly connected to the threaded wall 1001.

[0029] A bushing 1002 is provided on the outside of the transmission rod 10. The bushing 1002 is slidably connected to the fixed seat 9. A support block 1003 is provided on the side of the fixed seat 9. The support block 1003 is sleeved on the bushing 1002. Telescopic rods 1004 are provided on both sides of the fixed seat 9. The telescopic rods 1004 are connected to the fixed seat 9. The piston rod inside the telescopic rod 1004 is connected to the support block 1003.

[0030] The drive assembly includes a motor 8, a drive wheel 801, a belt 802, a driven wheel 803, and a limiting ring 804. The motor 8 is mounted on top of the fixed base 9 via a bracket. The drive wheel 801 is connected to the shaft of the motor 8. The drive wheel 801 and the driven wheel 803 are connected via the belt 802. The rotatable driven wheel 803 is mounted on the side of the fixed base 9 via the limiting ring 804.

[0031] The motor 8 drives the driving wheel 801 and the driven wheel 803 to rotate in sequence. Since the driven wheel 803 rotates in a fixed position and is threadedly connected to the threaded wall 1001, the transmission rod 10 rotates when it moves. When the drilled part body 5 is fixed on the clamping assembly on one side of the threading assembly 4, the transmission rod 10 drives the gearbox 7 to move toward the part body 5. The four rotating thread drill bits 13 follow the gearbox 7 to perform threading operations on the four holes on the part body 5 at the same time, so that the four bolt holes on the part body 5 are formed at the same time, which improves the processing efficiency.

[0032] Simultaneously, the clamping assembly fixes the part body 5 by placing it on the mounting table 504, and then lowering the rubber block 501 and pressure plate 502 via the cylinder 503. The mounting table 504 has multiple protrusions on its upper surface to support the part body 5. The shape of the protrusions can be adjusted arbitrarily according to the structure of the part body 5 to ensure that the protrusions fit snugly against the part body 5, keeping the part body 5 in a stable state. This allows the tapping assembly 4 to process part bodies 5 with various structures. Since the clamping assemblies on the drilling station and the tapping station are on the same horizontal plane, the part body 5 has the same reference on both clamping assemblies. This ensures the stability of the part body 5 after drilling at the drilling station and then tapping at the tapping station, while also reducing the time required to fix the position of the part body 5 and improving processing efficiency.

[0033] The working principle of this utility model is as follows: the part body 5 is transported by the conveyor belt 1 through the drilling station and the tapping station in sequence. At the same time, the robotic arm grabs the part body 5 in sequence to perform drilling operations at the drilling station and tapping operations at the tapping station. Finally, the robotic arm places the processed part body 5 on the conveyor belt 1, and the conveyor belt transports the part body 5 to the next process. This realizes automated continuous drilling and tapping operations, reduces the labor intensity of personnel, and improves work efficiency.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankcase drilling and tapping device, comprising a worktable (2), characterized in that: A conveyor belt (1) is provided on one side of the workbench (2). A first baffle (101) and a second baffle (102) are provided on the conveyor belt (1). A drilling station and a tapping station are provided on the top of the workbench (2). The drilling station includes a drilling device (3) and a clamping assembly for fixing the position of the part body (5). The tapping station includes a tapping assembly (4) and a clamping assembly for fixing the position of the part body (5). A second base (6) is provided at the lower part of the tapping assembly (4). A gearbox (7) for transmitting power to the thread drill bit (13) and a fixed seat (9) are provided above the second base (6). A drive assembly for driving the internal gears of the gearbox (7) to rotate is provided above the fixed seat (9). A transmission rod (10) is provided inside the fixed seat (9). A first gear set (11) and a second gear set (12) are provided inside the gearbox (7).

2. The crankcase drilling and tapping device according to claim 1, characterized in that: The clamping assembly includes a rubber block (501), a pressure plate (502), a cylinder (503), a mounting platform (504), and a first base (505). The two ends of the pressure plate (502) are connected to the rubber block (501) and the cylinder (503) respectively. The part body (5) is placed on the mounting platform (504), and the mounting platform (504) is fixed on the first base (505). The first base (505) is fixed on the worktable (2).

3. The crankcase drilling and tapping device according to claim 1, characterized in that: The drive assembly includes a motor (8), a drive wheel (801), a belt (802), a driven wheel (803), and a limiting ring (804). The motor (8) is mounted on the top of the fixed base (9) via a bracket. The drive wheel (801) is connected to the shaft of the motor (8). The drive wheel (801) and the driven wheel (803) are connected via a belt (802). The rotatable driven wheel (803) is mounted on the side of the fixed base (9) via the limiting ring (804).

4. The crankcase drilling and tapping device according to claim 1, characterized in that: The second base (6) is provided with a slide rail (704) on its upper part. The gearbox (7) is connected to the slide rail (704) via a slider (705) on its lower part. The gearbox (7) is provided with a partition (701) inside. One side of the partition (701) is connected to the gearbox (7) via a crossbar (702). The other side of the partition (701) is provided with a boss (703). One end of the transmission rod (10) extends into the inside of the gearbox (7) and is connected to the boss (703) by a bearing. The other end of the transmission rod (10) is provided with a threaded wall (1001). The driven wheel (803) is threadedly connected to the threaded wall (1001).

5. The crankcase drilling and tapping device according to claim 1, characterized in that: The transmission rod (10) is provided with a bushing (1002) on the outside. The bushing (1002) is slidably connected to the fixed seat (9). The side of the fixed seat (9) is provided with a support block (1003). The support block (1003) is sleeved on the bushing (1002). Both sides of the fixed seat (9) are provided with telescopic rods (1004). The telescopic rods (1004) are connected to the fixed seat (9). The piston rod inside the telescopic rods (1004) is connected to the support block (1003).

6. The crankcase drilling and tapping device according to claim 1, characterized in that: The first gear set (11) includes a first gear (1101), a second gear (1102), a third gear (1103), a fourth gear (1104), a fifth gear (1105), and a sixth gear (1106). The second gear set (12) includes a power gear (1201), a first transmission gear (1202), and a second transmission gear (1203). The transmission rod (10) is connected to the power gear (1201), and both the first transmission gear (1202) and the second transmission gear (1203) mesh with the power gear (1201).

7. A crankcase drilling and tapping device for cylinder surfaces according to claim 6, characterized in that: The first transmission gear (1202) is connected to the shaft of the first gear (1101), the second gear (1102) and the third gear (1103) are both meshed with the first gear (1101), the second transmission gear (1203) is connected to the shaft of the sixth gear (1106), the fourth gear (1104) and the fifth gear (1105) are both meshed with the sixth gear (1106), and the second gear (1102), the third gear (1103), the fourth gear (1104) and the fifth gear (1105) are respectively connected to the shafts of four threaded drill bits (13).

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