Tray positioning precision detection and adjustment system

Abstract

The utility model discloses a tray positioning precision detection and adjustment system, which comprises an engine cylinder body, a tray positioning mechanism, a tray positioning mechanism and a tray positioning mechanism, and is characterized in that a cylinder hole is formed in the top of the engine cylinder body; each positioning assembly comprises a lower positioning rod, a sleeve and an upper positioning rod, the sleeve and the upper positioning rod are equal in inner diameter, each lower positioning rod comprises an inserting end matched with the corresponding cylinder hole and a first sleeving end matched with the corresponding sleeve, and each upper positioning rod comprises a fixing end and a second sleeving end matched with the corresponding sleeve; and the control assembly is used for clamping the engine cylinder body and controlling the positions of the upper positioning rod, the engine cylinder body and the tray. According to the scheme, the first tray with the standard precision and the engine cylinder body are adopted to determine the positions of the lower positioning rod, the sleeve and the upper positioning rod of the positioning assembly, the tray to be overhauled and adjusted is detected and adjusted according to the position relation of the three parts, the whole structure is simple, the tray detection and repair cost is reduced, the tray rejection rate is reduced, and the production efficiency is improved. The detection and repair time is saved, and the long-time stop of the assembly line is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engine cylinder tray detection, in particular to a tray positioning accuracy detection and adjustment system. Background Art

[0002] The tray structure of the fuel system is as follows Figure 1 , 2 As shown, it includes a pallet body and a support positioning rod set on the pallet body for supporting the cylinder body. When in use, the positioning rod positions and supports the engine cylinder body through the edge pin and the round pin. After production, the manufacturer uses a three-coordinate measuring machine to detect and adjust the positioning rod. During long-term use, some pallets lose their positioning accuracy due to vibration, model change, robot collision, etc.

[0003] After the positioning accuracy is lost, the pallet can either be left unused or shipped back to the manufacturer for adjustment and repair. Although shipping the pallet back to the manufacturer for adjustment and repair can achieve the reuse of the pallet, it is costly in terms of money and time. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a pallet positioning accuracy detection and adjustment system.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The first aspect of the utility model provides a pallet positioning accuracy detection and adjustment system, comprising:

[0007] An engine cylinder block, wherein a cylinder hole is provided on the top of the engine cylinder block and a positioning hole is provided on the bottom of the engine cylinder block;

[0008] At least two sets of positioning assemblies, each set of positioning assemblies includes a lower positioning rod, a sleeve with the same inner diameter, and an upper positioning rod, the lower positioning rod includes a plug-in end adapted to the cylinder hole and a first sleeve end adapted to the sleeve, and the upper positioning rod includes a fixed end and a second sleeve end adapted to the sleeve;

[0009] A pallet, the pallet comprising a first pallet with a precision standard;

[0010] A control assembly is used to clamp the engine cylinder and control the position of the upper positioning rod, the engine cylinder, and the tray.

[0011] The utility model has the following advantages:

[0012] This solution uses a first pallet with precision standards and an engine cylinder block to determine the position of the lower positioning rod, sleeve, and upper positioning rod of the positioning assembly and uses the positional relationship of the three to detect and adjust the pallet to be inspected and adjusted. The entire structure is simple, which reduces the cost of pallet inspection and repair, reduces the scrap rate of pallets, saves inspection and repair time, and avoids long-term shutdown of the assembly line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a front view of the pallet positioning accuracy detection and adjustment system of the utility model;

[0015] Figure 2 It is a stereoscopic diagram of the pallet positioning accuracy detection and adjustment system of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The utility model provides a pallet positioning accuracy detection and adjustment system, specifically, Figure 1 , 2 As shown, the system includes an engine block 2, at least two sets of positioning components, a tray 3 and a control component. The tray includes a standard first tray, where the standard here is the accuracy standard. The top of the engine block 2 is provided with a cylinder hole, and the bottom is provided with a positioning hole, such as Figure 2 As shown, the top of the engine cylinder block 2 is provided with 4 cylinder holes, and the bottom is provided with 4 positioning holes, and the positions of the positioning holes correspond to the positions of the 4 supporting positioning rods on the first tray. Each group of positioning components includes a lower positioning rod 4, a sleeve 5 with the same inner diameter, and an upper positioning rod 6, wherein the lower positioning rod 4 includes a plug-in end adapted to the cylinder hole and a first sleeve end adapted to the sleeve 5, and the upper positioning rod 6 includes a fixed end and a second sleeve end adapted to the sleeve 5; the control component is used to clamp the engine cylinder block 2 and control the positions of the upper positioning rod 6, the engine cylinder block 2, and the tray 3.

[0023] When using the above system, when performing precision inspection and adjustment, the engine cylinder body 2 is first installed on the first tray 3 of the precision standard through the positioning hole, the supporting positioning rod on the first tray is positioned and supported by the edge pin and the round pin, and the plug-in ends of the lower positioning rods of at least two sets of positioning components are respectively inserted into the cylinder hole, and the control component controls the position of the upper positioning rod so that the first sleeve end and the second sleeve end of each set of positioning components are fitted and coaxial, at this time, the sliding sleeve 5, the sleeve 5 can slide smoothly between the first sleeve end and the second sleeve end, and the position P1 of the upper positioning rod 6 is recorded at this time. When the control component controls the first sleeve end of the upper positioning rod to fit with the second sleeve end, if the first sleeve end and the second sleeve end are not coaxial, because the inner diameter of the sleeve matches the outer diameter of the first sleeve end and the second sleeve end, the sleeve 5 cannot slide smoothly between the first sleeve end and the second sleeve end.

[0024] The control component removes the upper positioning rod 6, clamps the engine cylinder block 2 and moves it upward to ensure that there is no interference or collision with surrounding facilities. After the control component moves the first tray 3 out of the station, the second tray to be tested flows into the station.

[0025] The control component controls the engine cylinder body 2 to move downward to ensure that the edge pin and the round pin on the supporting positioning rod of the second tray are inserted into the fixing hole at the bottom of the engine cylinder body 2.

[0026] Control the upper positioning rod 6 to return to position P1 and move the sleeve up and down. At this time, if the sleeve can slide between the first sleeve end and the second sleeve end at the same time, the first sleeve end and the second sleeve end are coaxial, there is no offset between the two, and the second pallet has standard accuracy; if the sleeve cannot slide between the first sleeve end and the second sleeve end at the same time, the first sleeve end and the second sleeve end are not coaxial, there is an offset between the two, at this time, adjust the position of the supporting positioning rod on the second pallet according to the offset of the first sleeve end and the second sleeve end until the sleeve can slide between the first sleeve end and the second sleeve end at the same time.

[0027] Since there are generally 4 cylinder holes on the top of the engine cylinder block 2, the number of groups of positioning components is generally less than or equal to 4. For ease of operation, 2 groups of positioning components are preferably used, that is, 2 cylinder holes are selected as test adjustment holes.

[0028] Among them, the control component can be implemented by using the existing structure and can be specially designed and prepared. Of course, in order to save costs, the equipment in the existing factory can be directly used, that is, the control component is a robot, the robot includes a control unit, two clamping units 1 connected to the control unit and a pallet position control unit, and the pallet position control unit is used to fix the pallet and control the pallet to move out and into the workstation. In order to facilitate the fixation of the upper positioning rod 6, a connecting rod 7 is connected to the clamping unit 1, and the fixed end of the upper positioning rod 6 is detachably connected to the connecting rod 7. The pallet position control unit is a unit for existing pallet lifting control; the clamping unit 1 is an existing unit for realizing cylinder clamping.

[0029] The clamping jaw unit and the connecting rod 7 can be connected by welding or by a detachable connection, such as Figure 1 The bolt connection shown. By detachably connecting a connecting rod 7 to the clamping unit, the position control of the two upper positioning rods 6 can be achieved. With this structure, the structural modification is small and the detection cost is saved. The connecting rod 7 and the clamping unit are detachably connected, which is convenient for removal when not being detected so as not to affect the normal working condition. Specifically, the two are connected by a first bolt 9.

[0030] A fixing hole is provided on the fixed end of the upper positioning rod 6, which is detachably connected to the connecting rod 7 by a second bolt 10. The fixing hole can be circular, and in order to facilitate the adjustment of the distance between the upper positioning rods 6 of the two sets of positioning assemblies, the fixing hole can be provided with a waist-shaped hole.

[0031] The plug-in end of the lower positioning rod 4 is plugged into the cylinder hole, and a limiting flange is arranged between the plug-in end and the first sleeve end.

[0032] The inner through hole of the sleeve 5 can be circular, square, elliptical, prismatic, etc., that is, the sleeve 5 can be a cylinder, a square cylinder, an elliptical cylinder or a prismatic cylinder. Correspondingly, the shape and specification of the first sleeve end and the second sleeve end must be consistent with the inner through hole of the sleeve.

[0033] In order to simplify the detection operation process, there are two sets of positioning components. In order to improve the detection accuracy, the lower positioning rods of the two sets of positioning components are inserted into the two cylinder holes of the engine cylinder body 2 that are farthest apart, that is, the two cylinder holes on both sides. If the cylinder holes of the engine cylinder body 2 are 1# cylinder hole, 2# cylinder hole, 3# cylinder hole, and 4# cylinder hole from one side to the other, it is preferred to use 1# cylinder hole and 4# cylinder hole as the detection adjustment holes, and the control component is an existing robot as an example, and its detection and adjustment process is now specifically described.

[0034] 1. Use the first pallet with standard accuracy, such as the pallet that has been tested normally by the manufacturer in three-dimensional coordinates. The engine block 2 is placed on the first pallet and fixed. The pallet position control unit controls the first pallet 3 and the engine block 2 to flow into the workstation together. Install the lower positioning rod 4 and sleeve 5 in the 1# and 4# cylinder holes of the engine block, and install the upper positioning rod 6 on the robot gripper unit 1. Move the robot gripper unit 1 in manual mode until the upper positioning rod 6 and the lower positioning rod 4 are completely fitted and concentric. At this time, slide the sleeve 5, and the sleeve 5 can slide smoothly between the lower positioning rod 4 and the upper positioning rod 6. At this time, record the coordinates of the upper positioning rod 6 and set it as the standard point P1.

[0035] 2. Control the clamping claw unit 1 to remove the upper positioning rod 6, clamp the engine block 2 and move it upward. After the engine block 2 is separated from the first pallet and ensures that there will be no interference or collision with surrounding facilities, the pallet position control unit moves the first pallet out of the station and moves the second pallet to be tested into the station.

[0036] 3. In manual mode, the clamping jaw unit 1 is controlled to move downward, and the engine block 2 is placed on the second pallet to be inspected so that the edge pins and round pins on the supporting positioning rod of the second pallet are inserted into the fixing holes at the bottom of the engine block 2.

[0037] 4. In manual mode, control the clamping jaw unit 1 to move the upper positioning rod 6 to the standard point P1 until the upper positioning rod 6 and the lower positioning rod 4 are slightly in contact. At this time, observe and measure the offset distance between the lower positioning rod 4 and the upper positioning rod 6.

[0038] 5. If there is no offset distance between the lower positioning rod 4 and the upper positioning rod 6, and the sleeve 5 can slide smoothly between the first sleeve end and the second sleeve end, the second pallet is a precision pallet and does not need to be adjusted. If there is an offset distance between the lower positioning rod 4 and the upper positioning rod 6, and the sleeve 5 cannot slide smoothly between the first sleeve end and the second sleeve end, the position of the support positioning rod on the second pallet needs to be adjusted. At this time, the control clamping claw unit 1 is moved away from the upper positioning rod 6 again, the engine cylinder 2 is clamped and moved upward, and the position of the support positioning rod on the second pallet is adjusted according to the offset distance between the lower positioning rod 4 and the upper positioning rod 6. Repeat steps 3 and 4 until the sleeve 5 can slide smoothly between the first sleeve end and the second sleeve end. The accuracy of the pallet with precision error is repaired.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pallet positioning accuracy detection and adjustment system, characterized in that: include: An engine cylinder block (2), wherein a cylinder hole is provided at the top and a positioning hole is provided at the bottom; At least two groups of positioning assemblies, each group of positioning assemblies comprises a lower positioning rod (4), a sleeve (5) of equal inner diameter, and an upper positioning rod (6), the lower positioning rod (4) comprising a plug-in end adapted to the cylinder hole and a first sleeve end adapted to the sleeve (5), and the upper positioning rod (6) comprising a fixed end and a second sleeve end adapted to the sleeve (5); A pallet (3), the pallet comprising a first pallet with a precision standard; A control component, the control component is used to clamp the engine cylinder body (2) and control the positions of the upper positioning rod (6), the engine cylinder body (2) and the tray (3).

2. A pallet positioning accuracy detection and adjustment system according to claim 1, characterized in that: The positioning components have two groups; The control component is a robot, the robot comprising a control unit, two clamping units (1) both connected to the control unit, and a pallet position control unit, the clamping unit (1) being connected to a connecting rod (7), and the fixed end of the upper positioning rod (6) being detachably connected to the connecting rod (7).

3. A pallet positioning accuracy detection and adjustment system according to claim 2, characterized in that: Four cylinder holes are sequentially arranged on the top of the engine cylinder body (2), and the lower positioning rods (4) of the two groups of positioning assemblies are respectively inserted into the two cylinder holes on both sides.

4. A pallet positioning accuracy detection and adjustment system according to claim 2, characterized in that: The connecting rod (7) is detachably connected to the clamping jaw unit (1).

5. The pallet positioning accuracy detection and adjustment system according to claim 1, characterized in that: A limiting flange is provided between the plug-in end and the first sleeve end of the lower positioning rod (4).

6. A pallet positioning accuracy detection and adjustment system according to claim 1, characterized in that: The sleeve (5) is a round cylinder, a square cylinder, an elliptical cylinder or a prismatic cylinder.

Images