Special three-coordinate measuring clamp for engine cylinder body

Abstract

The utility model relates to the technical field of engine cylinder body measurement, and provides a special three-coordinate measuring clamp for an engine cylinder body, which comprises a bottom plate, a base plate, two positioning pin holes and two positioning pin holes, the Z-direction adjusting rod is arranged in the middle area of the third edge, and the third edge is connected with the first edge and the second edge; the rear stand column and the rear push block are arranged in the middle area of the third edge in a matched mode; the first front stand column and the second front stand column are arranged at an interval and are arranged in the middle area of the fourth edge opposite to the third edge; the first front push block is mounted on the first front stand column; the second front push block is mounted on the second front upright post; the first side stand column is arranged at the first edge position, the second side stand column is arranged at the second edge position, and bolt holes are formed in the second side stand column. According to the technical scheme of the utility model, accurate measurement and rapid switching of three coordinates in three states of blank, rough machining and assembly in the production stage of the engine cylinder body can be realized, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engine cylinder measurement, in particular to a three-coordinate measurement fixture dedicated to an engine cylinder. Background Art

[0002] In the related technology, a three-coordinate measuring machine is generally used to measure the engine cylinder block. Before each measurement, the workpiece needs to be moved manually, the probe needs to be moved manually for alignment, and the part needs to be fine-tuned to be as aligned with the xyz axis of the three-coordinate measuring machine as possible. Only then can the coordinate system be established after the reference is marked, and then the process-specified items can be measured. However, precise measurements are required in the three states of blank, rough processing and assembly during the production stage of the engine cylinder block. The efficiency of manual alignment detection cannot meet the demand, which seriously affects the detection and production efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, one purpose of the utility model is to provide a three-coordinate measuring fixture specifically for an engine cylinder block, which can realize accurate measurement and rapid switching of three coordinates in the three states of blank, rough machining and assembly during the production stage of the engine cylinder block, thereby helping to reduce production costs.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a three-coordinate measuring fixture dedicated to an engine cylinder body, comprising: a base plate, two locating pin holes are arranged on the base plate, so as to lock the locating pin holes through a ball lock mechanism to realize association with a three-coordinate measuring machine, and the two locating pin holes are respectively located at the positions of a first side and a second side opposite to each other; a Z-axis adjustment rod, which is arranged at the middle area position of a third side, and the third side connects the first side and the second side; a rear column and a rear push block which are arranged in a coordinated manner, which are arranged at the middle area position of the third side and are spaced apart from the Z-axis adjustment rod; a first front column and a second front column which are spaced apart, and are arranged at the first side opposite to the third side. The first and second front push blocks are located in the middle area of ​​the four sides; the first front push block is installed on the first front column; the second front push block is installed on the second front column. When the engine cylinder body is placed, it is first supported by the first front push block, the second front push block and the Z-axis adjustment rod. The first and second front push blocks are in contact with the bottom of the side surface where the cylinder hole end of the engine cylinder body is located; the first side column is arranged at the first side position. When the engine cylinder body is clamped and positioned, it is in contact with the bottom of the outer side surface of the cylinder hole of the engine cylinder body; the second side column is arranged at the second side position and is provided with bolt holes. Standard bolts are screwed into the bolt holes to make the engine cylinder body fit against the first side column.

[0006] Preferably, a threaded hole is processed on the Z-axis adjusting rod, which is connected to the base plate by bolts, so that the height can be fine-tuned and leveled by screwing the bolts in.

[0007] Preferably, the first forward pushing block and the second forward pushing block are L-shaped, and the L-shaped opening faces inward.

[0008] Preferably, the push-back block is L-shaped, and the L-shaped opening faces inward.

[0009] Preferably, the rear push block includes an integrally formed horizontal plate and vertical plate, the horizontal plate is fixedly connected to the rear column, and the vertical plate is provided with bolt holes, and standard bolts are screwed into the bolt holes so that the engine cylinder body fits the first front push block and the second front push block.

[0010] The three-coordinate measuring fixture for engine cylinder block proposed by the utility model has the following beneficial technical effects:

[0011] (1) The three-coordinate measuring fixture for engine cylinder block proposed by the utility model has a simple and reliable structure, is easy to process, is light in weight, is easy to adjust, and is easy to switch quickly. Each time the workpiece is measured, it is clamped by tightening the standard bolts, and the tooling is replaced by plugging and unplugging the locating pin holes of the bottom plate, which greatly improves the measurement efficiency.

[0012] (2) The utility model proposes a three-coordinate measuring fixture for engine cylinder blocks, which is linked to a three-coordinate measuring machine by locking the positioning pin holes through a ball lock mechanism, so as to establish a measurement reference. The fixture is simple and reliable. The fixture has both support and XYZ three-directional limit functions, and the relative positions of the components are reasonably designed. The positioning and installation are convenient and reliable. After the engine cylinder block is placed, the clamping and positioning can be achieved only by tightening the standard bolts.

[0013] (3) After the engine block is placed, the three-coordinate measuring fixture for an engine block proposed by the utility model is first supported by the first front column, the second front column and the Z-axis adjusting rod. The height of the Z-axis adjusting rod bolt is finely adjusted and leveled, thereby further ensuring the placement stability and positioning accuracy of the engine block.

[0014] 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

[0015] 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:

[0016] Figure 1 A schematic structural diagram of a three-coordinate measuring fixture for an engine cylinder block according to an embodiment of the utility model is shown;

[0017] Figure 2 Shows Figure 1The main structural diagram of the three-coordinate measuring fixture for the engine cylinder block;

[0018] Figure 3 Shows Figure 1 A top view of the three-coordinate measuring fixture for the engine cylinder block;

[0019] Figure 4 The schematic diagram of the structure of the engine block after the engine block is clamped by the three-coordinate measuring fixture is shown.

[0020] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the components is as follows:

[0021] 102 bottom plate, 1021 positioning pin hole, 1022 first side, 1023 second side, 1024 third side, 1025 fourth side, 104 Z-axis adjusting rod, 1041 threaded hole, 106 rear column, 108 rear push block, 1081 horizontal plate, 1082 vertical plate, 1083 bolt hole II, 110 first front column, 112 second front column, 114 first front push block, 116 second front push block, 118 first side column, 120 second side column, 1201 bolt hole I. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] Combine the following Figures 1 to 4 A three-coordinate measuring fixture for an engine cylinder block according to an embodiment of the utility model is described in detail.

[0025] like Figures 1 to 4As shown, a three-coordinate measuring fixture for an engine cylinder according to an embodiment of the utility model comprises: a base plate 102, a Z-direction adjusting rod 104, a first front column 110, a second front column 112, a first front push block 114, a second front push block 116, a first side column 118, a second side column 120, etc. Two positioning pin holes 1021 are arranged on the base plate 102, and the positioning pin holes 1021 can be locked by a ball lock mechanism to realize rapid positioning and clamping between the base plate 102 and the three-coordinate measuring machine, establish the association between the fixture and the three-coordinate measuring machine, and thus establish the measurement standard, which is simple and reliable. The two positioning pin holes 1021 are respectively located at the relative first side 1022 and the second side 1023, and the Z-direction adjusting rod 104 is arranged at the middle area of ​​the third side 1024, and the third side 1024 connects the first side 1022 and the second side 1023, and the Z-direction adjusting rod 104 can be fine-tuned in height to achieve leveling. A rear column 106 and a rear push block 108 are provided in the middle area of ​​the third side 1024, and are spaced apart from the Z-direction adjustment rod 104. The first front column 110 and the second front column 112 are spaced apart and are provided in the middle area of ​​the fourth side 1025 opposite to the third side 1024. The first front push block 114 is mounted on the first front column 110, and the second front push block 116 is mounted on the second front column 112. After the engine block is placed, it is supported by the first front push block 114, the second front push block 116 and the Z-direction adjustment rod 104, and the fixture has both support and XYZ three-directional limiting functions. A first side column 118 is provided at the first side 1022, and a second side column 120 is provided at the second side 1023. A bolt hole Ⅰ1201 is provided on the second side column 120. A standard bolt is screwed into the bolt hole Ⅰ1201 so that the engine cylinder body fits the first side column 118, and the first side column 118 contacts the bottom of the outer side surface of the cylinder hole of the engine cylinder body. The fixture has a simple and reliable structure, is easy to process, is light in weight, is easy to adjust, and is easy to switch quickly. Each time the workpiece is measured and replaced, the standard bolt is tightened and clamped, and the tooling is replaced by plugging and unplugging the positioning pin hole 1021 of the bottom plate 102, which greatly improves the measurement efficiency.

[0026] Furthermore, if Figure 1 and Figure 2 As shown, a threaded hole 1041 is processed on the Z-axis adjustment rod 104, which is connected to the bottom plate 102 by bolts, so that the height can be fine-tuned and leveled by screwing the bolts in. Thus, the placement stability and positioning accuracy of the engine cylinder block are further guaranteed.

[0027] Furthermore, if Figure 1 and Figure 4 As shown, the first forward push block 114 and the second forward push block 116 are L-shaped, and the L-shaped opening faces inward, so that when the engine cylinder block is clamped and positioned, they contact the bottom of the side surface where the cylinder hole end of the engine cylinder block is located to limit the position.

[0028] Furthermore, if Figures 1 to 4 As shown, the rear push block 108 is L-shaped, and the L-shaped opening faces inward. The rear push block 108 includes an integrally formed horizontal plate 1081 and a vertical plate 1082. The horizontal plate 1081 is fixedly connected to the rear column 106, and the vertical plate 1082 is provided with a bolt hole II 1083. A standard bolt is screwed into the bolt hole II 1083 so that the engine cylinder body fits the first front push block 114 and the second front push block 116.

[0029] The working process of the three-coordinate measuring fixture for engine cylinder body proposed by the utility model is as follows:

[0030] The positioning pin hole 1021 on the bottom plate 102 is locked by a ball lock mechanism to achieve positioning and clamping association with the three-dimensional coordinate measuring machine and establish a measurement benchmark;

[0031] The engine block is placed and supported by the first front push block 114, the second front push block 116 and the Z-adjusting rod 104, and is leveled by fine-tuning the height of the Z-adjusting rod 104; after screwing standard bolts through the bolt holes on the second side column 120 and the rear push block 108, the engine block is fitted to the first side column 118 and the first front push block 114 and the second front push block 116, thereby achieving positioning and clamping of the engine block.

[0032] Each time the workpiece is measured, it is clamped by tightening the standard bolts, and the tooling is replaced by plugging and unplugging the locating pin holes in the base plate.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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 three-coordinate measuring fixture for engine cylinder block, characterized in that: include: A base plate, wherein two locating pin holes are arranged on the base plate, so as to lock the locating pin holes through a ball lock mechanism to realize association with a three-dimensional coordinate measuring machine, and the two locating pin holes are respectively located at the positions of the first side and the second side opposite to each other; a Z-axis adjusting rod is arranged at the middle area of ​​the third side, and the third side connects the first side and the second side; a rear column and a rear push block are arranged in the middle area of ​​the third side and are spaced apart from the Z-axis adjusting rod; a first front column and a second front column are spaced apart and are arranged at the middle area of ​​the fourth side opposite to the third side; a first front push block is installed on the first front column; a second front push block is installed on the second front column, and when the engine cylinder block is placed, it is first supported by the first front push block, the second front push block and the Z-axis adjusting rod, and the first front push block and the second front push block are in contact with the bottom of the side surface where the cylinder bore end of the engine cylinder block is located; The first side column is arranged at the first side position, and contacts the bottom of the outer side surface of the cylinder hole of the engine cylinder block when the engine cylinder block is clamped and positioned; the second side column is arranged at the second side position, and a bolt hole is arranged thereon, and a standard bolt is screwed into the bolt hole so that the engine cylinder block fits against the first side column.

2. The three-coordinate measuring fixture for engine cylinder block according to claim 1, characterized in that: A threaded hole is processed on the Z-axis adjusting rod, which is connected to the base plate by bolts, so that the height can be fine-tuned and leveled by screwing the bolts in.

3. The three-coordinate measuring fixture for engine cylinder block according to claim 2, characterized in that: The first forward pushing block and the second forward pushing block are L-shaped, and the L-shaped openings face inwards.

4. The three-coordinate measuring fixture for engine cylinder block according to claim 3, characterized in that: The push-back block is L-shaped, and the L-shaped opening faces inward.

5. The three-coordinate measuring fixture for engine cylinder block according to claim 4, characterized in that: The rear push block includes an integrally formed horizontal plate and a vertical plate, the horizontal plate is fixedly connected to the rear column, and bolt holes are provided on the vertical plate. Standard bolts are screwed into the bolt holes so that the engine cylinder body fits the first front push block and the second front push block.

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