Cylinder camshaft hole machining positioning device

Abstract

The utility model discloses a kind of cylinder camshaft hole processing positioning devices, including positioning base, the top four corner of positioning base is uniformly fixed with support frame, the top of each support frame is provided with positioning assembly, and the top of each support frame and located outside positioning assembly is uniformly provided with rustproof component, and the bottom of each positioning assembly is provided with loose early-warning component.The cylinder camshaft hole processing positioning device can be evenly added lubricating oil on the outer wall of hydraulic cylinder push rod when the equipment is running by setting rustproof component, and the added lubricating oil is more uniform due to oil injection cotton, effectively avoids the local corrosion problem caused by uneven distribution of lubricating oil in traditional oil injection mode, and the cooperation design of connecting pipe and oil injection pipe can continuously provide lubricating oil for oil injection cotton, ensure that the push rod always maintains good lubrication state during the long-term reciprocating motion of hydraulic cylinder, thereby prolong the service life of hydraulic cylinder, reduce equipment maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of cylinder camshaft hole machining technology, specifically a cylinder camshaft hole machining positioning device. Background Technology

[0002] The camshaft bore is a hole structure on the engine block used to install the camshaft. Its core function is to control the timing and duration of valve opening and closing, which directly affects the engine's power output, fuel efficiency, and emissions performance. The machining positioning device limits and fixes the cylinder block during the machining of the camshaft bore.

[0003] Chinese patent CN207534437U discloses a positioning device for machining camshaft holes in cylinder blocks, comprising: a platform for placing the cylinder block; a gantry spanning the platform; a first clamping assembly for clamping one edge of the top of the cylinder block; a second clamping assembly for clamping the other edge of the top of the cylinder block, the second clamping assembly including a second rotating member, a second mounting member, a second guide rod, a second inclined clamping block, a second positive clamping block, and an elastic member, one end of the elastic member being connected to the second guide rod or the second rotating member, and the other end of the elastic member being connected to the gantry or the second mounting member, so that when the end of the first rotating member connected to the first guide rod tilts upward, the end of the second rotating member connected to the second guide rod also tilts upward; and a clamping drive assembly including a clamping cylinder and a driving member, which solves the problem of resource waste caused by the need for two clamping cylinders in the prior art.

[0004] The hydraulic cylinders in the equipment need to be replenished with lubricating oil regularly. If the lubricating oil is not added evenly, it may aggravate the wear of the internal parts of the hydraulic cylinder, thereby affecting its normal extension and contraction function. The clamping force of the clamping component will become unstable and unable to reliably fix the cylinder body. Under normal circumstances, it is inconvenient to add lubricating oil during equipment operation, which will have an adverse effect on processing efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning device for machining the camshaft hole of a cylinder, in order to solve the problem mentioned in the background art that uneven addition of lubricating oil may aggravate the wear of internal parts of the hydraulic cylinder, thereby affecting its normal telescopic function, and the clamping force of the clamping component will become unstable and unable to reliably fix the cylinder.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning device for machining camshaft holes in a cylinder block, comprising a positioning base, wherein support frames are fixedly installed at the four corners of the top of the positioning base, a positioning component is provided on the top of each support frame, and an anti-rust component is provided on the top of each support frame and outside the positioning component, and a loosening warning component is provided at the bottom of each positioning component, and a placement seat is fixedly installed in the middle of the top of the positioning base.

[0007] Preferably, the rust prevention component includes an oil injection pipe with an internal cavity. Each oil injection pipe is fixedly installed on the outside of the corresponding positioning component, and the inner wall of each oil injection pipe has multiple transmission holes communicating with the cavity. The inner wall of the oil injection pipe is detachably connected with oil injection cotton, and a connecting pipe is fixedly installed on one side of the outer wall of the oil injection pipe.

[0008] Preferably, the positioning assembly includes a hydraulic cylinder, the push rod of which slides through the inner side of the oil-filled cotton. Each hydraulic cylinder is fixedly installed inside the support frame, and a pressing block is hinged to the top of the push rod of each hydraulic cylinder. Two connecting plates are symmetrically hinged to both sides of each pressing block, and a mounting plate is hinged to the inner side of each connecting plate.

[0009] Preferably, the loosening warning component includes a mounting groove, which is formed inside the pressing block. Two guide rods are symmetrically fixedly installed on both sides of the pressing block, and each guide rod has a spring sleeved on its outer end.

[0010] Preferably, an adjusting block is slidably connected between the outer ends of the two guide rods, a contact head is fixedly installed on the top of the adjusting block, and a PLC sensor is fixedly installed on the inner top wall of the mounting groove, with the PLC sensor in contact with the contact head.

[0011] Preferably, the inner end of the connecting pipe extends into the cavity of the oil injection pipe, the oil injection pipe is located at the top of the cylinder body of the hydraulic cylinder, and the inner wall of the oil injection cotton is slidably attached to the outer wall of the push rod of the hydraulic cylinder.

[0012] Preferably, the top of the push rod of the hydraulic cylinder extends to the outer side of the top of the support frame, and the bottom of the mounting plate and the top of the support frame are fixedly connected.

[0013] Preferably, the two ends of the spring are fixedly connected to the outer wall of the pressing block and the top of the adjusting block, respectively; the adjusting block is slidably connected to the mounting groove; and the contact head is in active contact with the PLC sensor.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. By incorporating anti-rust components, this utility model can evenly add lubricating oil to the outer wall of the hydraulic cylinder's push rod during equipment operation. The oil-filling cotton further ensures more even lubrication, effectively avoiding the localized rust problem caused by uneven lubricating oil distribution in traditional oil-filling methods. Simultaneously, the coordinated design of the connecting pipe and the oil-filling pipe continuously provides lubricating oil to the oil-filling cotton, ensuring that the push rod maintains good lubrication during the long-term reciprocating motion of the hydraulic cylinder, thereby extending the service life of the hydraulic cylinder and reducing equipment maintenance costs.

[0015] 2. By setting up a loosening warning component, when the pressing block becomes loose due to long-term use, the adjusting block slides downward under the action of the spring, causing the contact head to separate from the PLC sensor, thus triggering a warning signal in time. This allows operators to detect and deal with the loosening problem as soon as possible, avoiding the impact of the pressing block on the positioning accuracy, ensuring the stability and reliability of the processing process, and further improving the safety performance and automation monitoring level of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the processing and positioning structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the positioning component of this utility model; Figure 4 This is a three-dimensional structural diagram of the rust-proof component of this utility model; Figure 5 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Positioning base; 2. Support frame; 31. Hydraulic cylinder; 32. Pressing block; 33. Connecting plate; 34. Mounting plate; 4. Placement seat; 51. Oil injection pipe; 52. Transmission hole; 53. Oil injection cotton; 54. Connecting pipe; 61. Mounting groove; 62. Guide rod; 63. Spring; 64. Adjusting stop; 65. Contact head; 66. PLC sensor. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a technical solution: a positioning device for machining camshaft holes in a cylinder block, including a positioning base 1, with support frames 2 fixedly installed at the four corners of the top of the positioning base 1, a positioning component on the top of each support frame 2, a rust-proof component on the top of each support frame 2 and outside the positioning component, and a loosening warning component at the bottom of each positioning component, and a placement seat 4 fixedly installed in the middle of the top of the positioning base 1.

[0020] The rust-prevention component includes an oil injection pipe 51, which has an internal cavity. Each oil injection pipe 51 is fixedly installed on the outside of its corresponding positioning component, and the inner wall of each oil injection pipe 51 has multiple transmission holes 52 communicating with the cavity. An oil injection cotton 53 is detachably connected to the inner wall of the oil injection pipe 51, and a connecting pipe 54 is fixedly installed on one side of the outer wall of the oil injection pipe 51. The inner end of the connecting pipe 54 extends into the cavity of the oil injection pipe 51. The oil injection pipe 51 is located at the top of the cylinder body of the hydraulic cylinder 31, and the inner wall of the oil injection cotton 53 is slidably fitted against the outer wall of the push rod of the hydraulic cylinder 31. The detachable design of the oil injection cotton 53 facilitates regular replacement, ensuring the continuity of the rust-prevention effect. The connecting pipe 54 allows for precise control of the lubricating oil flow, avoiding lubricating oil waste and adverse effects on other components.

[0021] Please see Figure 1 , Figure 2 and Figure 3 The positioning assembly includes a hydraulic cylinder 31. The push rod of the hydraulic cylinder 31 slides through the inner side of the oil-filled cotton 53. Each hydraulic cylinder 31 is fixedly installed inside the support frame 2, and the top of the push rod of each hydraulic cylinder 31 is hinged to a pressing block 32. Two connecting plates 33 are symmetrically hinged to both sides of each pressing block 32, and a mounting plate 34 is hinged to the inner side of each connecting plate 33. The inner wall of the oil-filled cotton 53 is slidably fitted to the outer wall of the push rod of the hydraulic cylinder 31. The top of the push rod of the hydraulic cylinder 31 extends to the outer top of the support frame 2. The bottom of the mounting plate 34 is fixedly connected to the top of the support frame 2. Because the mounting plate 34 is fixedly connected to the support frame 2, the structural stability of the entire positioning assembly is ensured. The symmetrically arranged connecting plates 33 on both sides of the pressing block 32 ensure uniform force during pressing, avoiding positioning offset due to excessive force on one side, thereby improving the positioning accuracy when machining the camshaft hole of the cylinder body.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 The loosening warning component includes a mounting groove 61, which is located inside the pressing block 32. The bottom opening of the mounting groove 61 extends to the outside of the pressing block 32. Two guide rods 62 are symmetrically fixedly mounted on both sides of the pressing block 32, and each guide rod 62 has a spring 63 fitted at its outer end. An adjusting block 64 is slidably connected between the outer ends of the two guide rods 62. The bottom of the guide rod 62 is slidably connected to the end of the adjusting block 64, and a contact head 65 is fixedly mounted on the top of the adjusting block 64. A PLC sensor 66 is fixedly mounted on the inner top wall of the mounting groove 61, and the PLC sensor 66 is in contact with the contact head 65. The two ends of the spring 63 are fixedly connected to the outer wall of the pressing block 32 and the outer wall of the adjusting block 64, respectively. The adjusting block 64 is slidably connected to the mounting groove 61, and the contact head 65 and the PLC sensor 66 are in active contact.

[0023] In use, the contact head 65 and PLC sensor 66 can monitor the firmness of the fixed cylinder in real time. When the cylinder camshaft hole becomes loose between the pressing block 32 and the cylinder camshaft due to vibration or long-term use during the machining process, the force of the cylinder camshaft on the adjusting block 64 decreases, the compression spring 63 produces a restoring action, and the adjusting block 64 will slide downward under the restoring elasticity of the spring 63. The contact head 65 separates from the PLC sensor 66, and the PLC sensor 66 then sends a signal to the external control system to remind the operator to check and tighten the positioning device in time, effectively avoiding machining errors or safety accidents caused by cylinder loosening.

[0024] Working principle: First, place the cylinder body to be processed on the placement seat 4, ensuring that the bottom of the cylinder body camshaft is in close contact with the top contact surface of the placement seat 4. Then, start the hydraulic cylinder 31. The push rod of the hydraulic cylinder 31 pushes the pressing block 32 to move upward. Since the two sides of the pressing block 32 are hinged to the mounting plate 34 fixed on the top of the support frame 2 through the connecting plate 33, under the driving force of the hydraulic cylinder 31, the pressing block 32 will rotate around the connection point between the connecting plate 33 and the mounting plate 34 as the fulcrum, gradually approaching the surface of the cylinder body and applying pressure until the cylinder body camshaft is stably pressed on the placement seat 4. During long-term use of the device, in order to prevent the push rod of the hydraulic cylinder 31 from rusting and affecting its normal extension and retraction function, maintenance can be carried out through the anti-rust component. The operator regularly injects lubricating oil into the oil injection pipe 51 through the connecting pipe 54. The lubricating oil is absorbed by the oil injection cotton 53 through the transmission hole 52. Since the oil injection cotton 53 is slidably connected to the push rod of the hydraulic cylinder 31, when the push rod moves in extension and retraction, the oil injection cotton 53 will evenly coat the surface of the push rod with the absorbed lubricating oil to form a protective film. When the cylinder camshaft is subjected to vibration during processing or when the pressure between the pressing block 32 and the cylinder camshaft decreases due to prolonged use, the loosening warning component will activate in time. Originally, under the elastic force of the spring 63, the adjusting block 64 is compressed by the reaction force of the cylinder, keeping the contact head 65 in contact with the PLC sensor 66. Once the cylinder camshaft becomes loose, the reaction force on the adjusting block 64 decreases, and the elastic force of the spring 63 will push the adjusting block 64 to slide downward in the mounting groove 61, causing the contact head 65 to separate from the PLC sensor 66. After detecting this change, the PLC sensor 66 immediately transmits the signal to the external control system. After receiving the signal, the control system will remind the operator through audible and visual alarms, etc. The operator can adjust the pressure of the pressing block 32 or check the device in time. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for machining camshaft holes in a cylinder block, characterized in that: The system includes a positioning base (1), and a support frame (2) is fixedly installed at the four corners of the top of the positioning base (1). A positioning component is provided on the top of each support frame (2), and an anti-rust component is provided on the top of each support frame (2) and outside the positioning component. A loosening warning component is provided at the bottom of each positioning component. A placement seat (4) is fixedly installed in the middle of the top of the positioning base (1). The rust prevention component includes an oil injection pipe (51), which has a cavity inside. Each oil injection pipe (51) is fixedly installed on the outside of the corresponding positioning component. The inner wall of each oil injection pipe (51) is provided with multiple transmission holes (52) that communicate with the cavity. The inner wall of the oil injection pipe (51) is detachably connected with an oil injection cotton (53). A connecting pipe (54) is fixedly installed on one side of the outer wall of the oil injection pipe (51).

2. The cylinder block camshaft hole machining positioning device according to claim 1, characterized in that: The positioning assembly includes a hydraulic cylinder (31), the push rod of the hydraulic cylinder (31) slides through the inside of the oil-filled cotton (53), each hydraulic cylinder (31) is fixedly installed inside the support frame (2), and the top of the push rod of each hydraulic cylinder (31) is hinged to a pressing block (32), and two connecting plates (33) are symmetrically hinged to both sides of each pressing block (32), and an mounting plate (34) is hinged to the inside of each connecting plate (33).

3. The cylinder block camshaft hole machining positioning device according to claim 1, characterized in that: The loosening warning component includes a mounting slot (61) which is opened inside the pressing block (32). Two guide rods (62) are symmetrically fixed on both sides of the pressing block (32), and a spring (63) is sleeved on the outer end of each guide rod (62).

4. The cylinder block camshaft hole machining positioning device according to claim 3, characterized in that: An adjusting block (64) is slidably connected between the outer ends of the two guide rods (62). A contact head (65) is fixedly installed on the top of the adjusting block (64). A PLC sensor (66) is fixedly installed on the inner top wall of the mounting groove (61). The PLC sensor (66) is in contact with the contact head (65).

5. The cylinder block camshaft hole machining positioning device according to claim 1, characterized in that: The inner end of the connecting pipe (54) extends into the cavity of the oil injection pipe (51), the oil injection pipe (51) is located at the top of the cylinder body of the hydraulic cylinder (31), and the inner wall of the oil injection cotton (53) is slidably attached to the outer wall of the push rod of the hydraulic cylinder (31).

6. The positioning device for machining camshaft holes in a cylinder block according to claim 2, characterized in that: The top of the push rod of the hydraulic cylinder (31) extends to the top outside of the support frame (2), and the bottom of the mounting plate (34) and the top of the support frame (2) are fixedly connected.

7. The cylinder block camshaft hole machining positioning device according to claim 4, characterized in that: The two ends of the spring (63) are fixedly connected to the outer wall of the pressing block (32) and the top of the adjusting block (64) respectively. The adjusting block (64) is slidably connected to the mounting groove (61). The contact head (65) and the PLC sensor (66) are in active contact.

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