A device to prevent secondary processing of piston fine hole

Abstract

The utility model relates to the technical field of piston processing automation, and provides a device for preventing secondary processing of piston fine holes, including: a support base and a positioning tire, which are installed on a boring machine; a diamond pin push-out cylinder, which is installed on the support base; a diamond pin, which is installed on the diamond pin push-out cylinder; a position sensor, which is installed on the support base and is located above the diamond pin; the diamond pin is an airtight diamond pin, which is provided with a matching air inlet and air outlet; a pressure sensor, which is provided on a gland push-out cylinder, and the air source is connected to the pressure sensor, and the pressure sensor is connected to the air inlet of the airtight diamond pin; a gland push-out cylinder, which is provided above the positioning tire through a support frame; and a gland, which is connected to the gland push-out cylinder. Through the technical solution of the utility model, by performing state detection, controlling whether the boring machine processing program can be started, and controlling during the processing process, the phenomenon of secondary processing of piston fine holes can be effectively prevented, and the degree of automation is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of piston processing automation, in particular to a device for preventing secondary processing of piston fine holes. Background Art

[0002] The size of the piston pin hole affects the normal operation of the piston in the cylinder. It is generally processed by manual clamping, diamond pin positioning, and gland pressing. In actual production, it is easy for the same piston to be clamped twice. The secondary positioning process will cause the fine hole size to be unqualified, affecting the use, and there is a serious risk of scrap loss and quality claims after circulation. In the prior art, a processing counter is installed on the lathe or the processing counting function of some models of lathes is used. The processing quantity is manually checked with the upper and lower process to determine whether there is secondary processing. The products after secondary processing are selected to avoid circulation. There are the following technical defects:

[0003] (1) It only plays the role of post-investigation, and cannot effectively solve the problem of secondary processing of piston precision holes. There is still the problem of waste loss in the production process.

[0004] (2) Manual inspection is required to check whether secondary processing of piston fine hole is required. The processing control capability is poor and reliable automated control methods are lacking. There is a high risk of unqualified products being circulated. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0006] To this end, the purpose of the utility model is to provide a device for preventing secondary processing of piston fine holes. By performing state detection, it controls whether the boring machine processing program can be started and controls during the processing process, which can effectively prevent secondary processing of piston fine holes and has a high degree of automation.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a device to prevent secondary processing of piston fine hole, including: a support base, installed on a boring machine; a positioning tire, installed on the boring machine to position the piston to be processed; a diamond pin push-out cylinder, installed on the support base; a diamond pin, installed on the diamond pin push-out cylinder, and facing the pin hole position of the piston to be processed; a position sensor, installed on the support base, and located above the diamond pin, to detect whether the diamond pin completes the pinning action normally, and to position the piston to be processed; the diamond pin is airtight A diamond pin, the airtight diamond pin is provided with matching air inlet and air outlet; a pressure sensor is provided on the gland pushing cylinder, the air source is connected to the pressure sensor, the pressure sensor is connected to the air inlet of the airtight diamond pin, when the diamond pin is used to position the piston to be processed, the air outlet is in the piston pin hole, the pressure sensor detects the air pressure, and determines whether to perform piston fine hole processing; a gland pushing cylinder is provided above the positioning tire through a support frame; a gland is connected to the gland pushing cylinder to press the piston tightly under the drive of the gland pushing cylinder.

[0008] Preferably, the air inlet and the air outlet are spaced apart on the circumferential side of the airtight diamond pin, and when the airtight diamond pin is used to position the piston to be processed, the air outlet is located inside the piston pin hole and the air inlet is located outside the piston pin hole.

[0009] Preferably, the aperture of the air outlet hole is smaller than the aperture of the air inlet hole.

[0010] Preferably, the support frame is L-shaped, the pressure cover pushing cylinder is installed above the transverse plate of the L-shaped support frame, and the pressure cover is arranged below the transverse plate of the L-shaped support frame.

[0011] Preferably, the gland is in the shape of a hollow truncated cone, and the inner diameter of its bottom matches the outer diameter of the piston to press the piston.

[0012] Preferably, when the diamond pin positions the piston to be processed, the position sensor corresponds to the connection position between the diamond pin and the diamond pin pushing cylinder, and the diameter at the connection position is different from the diameter of the diamond pin.

[0013] The device for preventing secondary processing of piston fine hole proposed by the utility model has the following beneficial technical effects:

[0014] (1) The utility model proposes a device for preventing secondary processing of piston fine holes. Through the cooperation of a position sensor, a diamond pin, a pressure sensor, etc., a signal for detecting the status of the diamond pin and a signal for the status of the piston pin hole are fed back to a boring machine to control whether the boring machine processing program can be started. Thus, the secondary processing of the piston pin hole can be effectively prevented during the processing, and the problem of waste loss caused by the secondary processing of the piston pin hole in the production process can be effectively solved.

[0015] (2) The device for preventing secondary processing of piston fine hole proposed by the utility model can be connected to the control system of the boring machine, has a high degree of automation, and greatly reduces the occurrence of the circulation of unqualified products.

[0016] (3) The device for preventing secondary processing of piston fine holes proposed by the utility model can effectively check the secondary processing problems of piston pin holes caused by the two states of diamond pin penetration and non-penetration, thereby more effectively preventing the occurrence of secondary processing of piston fine holes.

[0017] (4) The utility model proposes a device for preventing secondary processing of piston fine holes. Through the unique design of the airtight diamond pin, the pressure sensor can detect the difference in outlet pressure at the outlet hole before and after the piston pin hole is processed, thereby controlling the start of the boring machine processing program and further avoiding the occurrence of secondary processing of the piston fine hole.

[0018] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic structural diagram of a device for preventing secondary machining of piston fine holes according to an embodiment of the utility model is shown;

[0021] Figure 2 Shows Figure 1 A schematic diagram of the main structure of the device for secondary processing of the piston fine hole;

[0022] Figure 3 Shows Figure 1 Schematic diagram of the structure of the medium airtight diamond pin,

[0023] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the components is as follows:

[0024] 102 support base, 104 positioning tire, 106 diamond pin push-out cylinder, 108 diamond pin, 1082 air inlet, 1084 air outlet, 110 position sensor, 112 pressure cover push-out cylinder, 114 support frame, 1142 cross plate, 116 pressure cover, 118 pressure sensor. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] Combine the following Figures 1 to 3 A device for preventing secondary machining of a piston fine hole according to an embodiment of the utility model is described in detail.

[0028] like Figures 1 to 3As shown, a device for preventing secondary processing of piston fine hole according to an embodiment of the utility model comprises: a support base 102, a positioning tire 104, a diamond pin push cylinder 106, a diamond pin 108, a position sensor 110, a gland push cylinder 112, a gland 116, a pressure sensor 118, etc. The positioning tire 104 is installed on a boring machine to position the piston to be processed. The support base 102 is installed on the boring machine, the diamond pin push cylinder 106 is installed on the support base 102, and the diamond pin 108 is installed on the diamond pin push cylinder 106. In addition, the diamond pin push cylinder 106 drives the diamond pin 108 to move forward to position the pin hole of the piston to be processed. The position sensor 110 is installed on the support base 102 and is located above the diamond pin 108. It can detect whether the diamond pin 108 completes the pinning action normally and positions the piston to be processed. If the diamond pin 108 cannot complete the pinning action normally, the position sensor 110 will feed back the signal to the boring machine and the processing program cannot be started. The diamond pin 108 is an airtight diamond pin 108, on which a matching air inlet hole 1082 and an air outlet hole 1084 are arranged. The pressure sensor 118 is arranged on the gland pushing cylinder 112, and the air source is connected to the pressure sensor 118. The pressure sensor 118 is connected to the air inlet hole 1082 of the airtight diamond pin 108. The diamond pin 108 completes the pin penetration action normally. When positioning the piston to be processed, the air outlet hole 1084 is in the piston pin hole. The airtight diamond pin 108 takes in air from the air inlet hole 1082 and exhausts air from the air outlet hole 1084. The outlet pressure at the air outlet hole 1084 is fed back to the pressure sensor 118. According to the airtight detection principle, it is detected whether the piston pin hole is processed. Before and after the piston pin hole is processed, the outlet pressure at the air outlet hole 1084 is different. If it does not meet the set pressure limit, the boring machine processing program cannot be started. The gland push-out cylinder 112 is arranged above the positioning tire 104 through a support frame 114. The gland 116 is connected to the gland push-out cylinder 112. The piston can be pressed down by the drive of the gland push-out cylinder 112. The boring machine control system determines whether the boring machine can perform processing operations based on the signals fed back by the position sensor 110 and the pressure sensor 118, and processes the pin holes that have been positioned by the pins and detected as qualified by the pressure sensor 118.

[0029] Furthermore, if Figure 3 As shown, the air inlet 1082 and the air outlet 1084 are arranged at intervals on the circumferential side of the airtight diamond pin 108, and when the airtight diamond pin 108 positions the piston to be processed, the air outlet 1084 is located inside the piston pin hole, and the air inlet 1082 is located outside the piston pin hole. Therefore, the air outlet pressure at the air outlet 1084 is different before and after the piston pin hole is processed, and the pressure sensor 118 can detect whether the piston pin hole is processed by using the airtight detection principle, which can effectively avoid the occurrence of secondary processing of the piston fine hole.

[0030] Furthermore, if Figure 3 As shown, the aperture of the air outlet hole 1084 is smaller than the aperture of the air inlet hole 1082. Therefore, after the air source enters the airtight diamond pin 108, a certain pressure can be maintained in the airtight diamond pin 108, and the pressure is different before and after the piston pin hole is processed, which is conducive to detecting whether the piston pin hole is processed through the pressure sensor 118, and can effectively avoid the occurrence of secondary processing of the piston fine hole.

[0031] Furthermore, if Figure 1 and Figure 2 As shown, the support frame 114 is L-shaped, the pressure cover pushing cylinder 112 is installed above the horizontal plate 1142 of the L-shaped support frame 114, and the pressure cover 116 is arranged below the horizontal plate 1142 of the L-shaped support frame 114.

[0032] The gland 116 is in the shape of a hollow truncated cone, and the inner diameter of its bottom matches the outer diameter of the piston to compress the piston.

[0033] Therefore, on the one hand, it is convenient to clamp the piston and realize the processing of the piston pin hole. On the other hand, it provides an installation position for the pressure sensor 118, so that the installation of the pressure sensor 118 is more stable and not easily affected by the outside world, and the detection effect is more accurate.

[0034] Furthermore, if Figure 1 and Figure 2 As shown, when the diamond pin 108 positions the piston to be processed, the position sensor 110 corresponds to the connection position between the diamond pin 108 and the diamond pin pushing cylinder 106 , and the diameter at the connection position is different from the diameter of the diamond pin 108 .

[0035] Therefore, the position sensor 110 can be used to detect whether the diamond pin 108 below it has completed the pinning action normally, thereby effectively avoiding the problem of secondary processing of the piston fine hole caused by the diamond pin 108 not being pinned.

[0036] It is worth noting that the diamond pin push-out cylinder 106, the position sensor 110, the pressure sensor 118, the gland push-out cylinder 112, etc. are all connected to the boring machine control system for signal transmission control.

[0037] The working process of the device for preventing secondary processing of piston fine hole proposed by the utility model is as follows:

[0038] After the piston is placed on the positioning tire 104, the diamond pin pushes out the cylinder 106 to drive the airtight diamond pin 108 to move forward for positioning. At this time, the position sensor 110 above the diamond pin 108 works to detect whether the diamond pin 108 has completed the pinning action and realize the positioning function (if not, the signal is fed back to the boring machine, and the boring machine processing program cannot be started). At this time, the airtight diamond pin 108 takes in air from the air inlet 1082 and the air outlet 1084, and the outlet pressure at the air outlet 1084 is fed back to the pressure sensor 118. According to the airtight detection principle, it is detected whether the piston pin hole is processed (when the diamond pin 108 is positioned, the air outlet 1084 is in the piston pin hole. Before and after the piston pin hole is processed, the outlet pressure at the air outlet 1084 is different. The pressure sensor 118 feeds back the signal to the boring machine. If it does not meet the set pressure limit, the boring machine processing program cannot be started). The pressure cover pushes out the cylinder 112, which drives the pressure cover 116 to press the piston. After the processing signal is started, the signals fed back by the position sensor 110 and the pressure sensor 118 determine whether the boring machine can perform processing operations. The piston is positioned by the pin, and the pin hole that is qualified (meets the processing requirements) detected by the pressure sensor 118 can be processed.

[0039] Thus, the problem of secondary processing of piston fine hole generated in the two states of diamond pin through pin and without through pin during the processing of piston pin hole is effectively solved. Specifically, after the processing is completed, the piston is clamped again without inserting the locating pin, and the clamping processing can be directly performed, and the position sensor can feed back the signal to the boring machine; after the locating pin is passed through the clamping processing, the pressure sensor can feed back the signal to the boring machine. After the processing is completed, the piston is not taken down, and it is clamped again without inserting the locating pin, and the position sensor can feed back the signal to the boring machine; after the locating pin is passed through the clamping processing, the pressure sensor can feed back the signal to the boring machine.

[0040] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for preventing secondary processing of piston fine hole, characterized in that: include: A supporting base is installed on the boring machine; a positioning tire is installed on the boring machine to position the piston to be processed; A diamond pin push-out cylinder is mounted on the support base; A diamond pin is mounted on the diamond pin pushing cylinder and faces the pin hole position of the piston to be processed; A position sensor is installed on the support base and is located above the diamond pin to detect whether the diamond pin completes the pin-threading action normally and positions the piston to be processed; the diamond pin is an airtight diamond pin, and matching air inlet and air outlet holes are arranged on the airtight diamond pin; a pressure sensor is arranged on the gland pushing cylinder, and the air source is connected to the pressure sensor. The pressure sensor is connected to the air inlet of the airtight diamond pin below. When the diamond pin positions the piston to be processed, the air outlet is in the piston pin hole, and the air pressure is detected by the pressure sensor to determine whether to perform piston fine hole processing; the gland pushing cylinder is arranged above the positioning tire through a support frame; the gland is connected to the gland pushing cylinder to press the piston under the drive of the gland pushing cylinder.

2. The device for preventing secondary processing of piston fine hole according to claim 1, characterized in that: The air inlet and the air outlet are arranged at intervals on the circumferential side of the airtight diamond pin, and when the airtight diamond pin is used to position the piston to be processed, the air outlet is located in the piston pin hole and the air inlet is located outside the piston pin hole.

3. The device for preventing secondary processing of piston fine hole according to claim 2, characterized in that: The aperture of the air outlet is smaller than the aperture of the air inlet.

4. The device for preventing secondary processing of piston fine hole according to any one of claims 1 to 3, characterized in that: The support frame is L-shaped, the pressure cover pushing cylinder is installed above the transverse plate of the L-shaped support frame, and the pressure cover is arranged below the transverse plate of the L-shaped support frame.

5. The device for preventing secondary processing of piston fine hole according to claim 4, characterized in that: The gland is in the shape of a hollow truncated cone, and the inner diameter of its bottom matches the outer diameter of the piston to press the piston.

6. The device for preventing secondary processing of piston fine hole according to claim 5, characterized in that: When the diamond pin positions the piston to be processed, the position sensor corresponds to the connection position between the diamond pin and the diamond pin pushing cylinder, and the diameter of the connection position is different from the diameter of the diamond pin.

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