CN211317123U - Clamp for detecting engine crankshaft - Google Patents

Abstract

The utility model discloses a fixture for engine crankshaft detection, which comprises a bottom plate, a chute is arranged on the bottom plate, the length direction of the chute is consistent with the axial direction of the crankshaft; There are a first V-shaped block support device, an angular positioning device, an axial positioning device and a second V-shaped block support device. A position-adjustable top pressing device is arranged beside the angular positioning device. An axial pressing device is provided on the side of the block supporting device away from the axial positioning device; the first V-shaped block supporting device, the angular positioning device, the axial positioning device, the second V-shaped block supporting device, the top pressing device The positioning or support height of the clamping device and the axial compression device can be adjusted. The fixture for engine crankshaft inspection of the utility model can be applied to crankshaft inspections of different types, saves manpower and material resources, and improves inspection efficiency.

Description

A fixture for engine crankshaft inspection

technical field

The utility model relates to the technical field of automobile detection, in particular to a fixture used for engine crankshaft detection.

Background technique

The crankshaft is the main rotating mechanism of the engine, which converts the up and down reciprocating motion of the piston into its own rotation. The rotation of the crankshaft is the power source of the engine and the source power of the entire mechanical system. As an important part of the engine, the crankshaft has high dimensional accuracy requirements. Therefore, the dimensional accuracy detection of the crankshaft is very important in the processing and production process of the crankshaft.

When testing the dimensional accuracy of the crankshaft, the crankshaft needs to be clamped and positioned, so that the crankshaft can maintain a stable position when it is on the measuring platform, so as to avoid affecting the accuracy of the final dimensional measurement. At present, when inspecting the full size of the crankshaft, crankshafts of different specifications and models need to use corresponding fixtures, and the compatibility of the fixtures is poor. Replacing the fixtures wastes manpower and material resources and reduces the detection efficiency.

Therefore, how to provide a jig for engine crankshaft detection so that the jig can be applied to different types of crankshaft detection, save manpower and material resources, and improve detection efficiency has become a technical problem to be solved urgently by those skilled in the art.

Utility model content

In view of this, the utility model provides a fixture for crankshaft detection of an engine, so that the fixture can be applied to the detection of different types of crankshafts, saves manpower and material resources, and improves detection efficiency.

To achieve the above object, the utility model provides the following technical solutions:

A fixture for engine crankshaft detection, comprising a bottom plate, a chute is arranged on the bottom plate, the length direction of the chute is consistent with the axial direction of the crankshaft; a first V-shaped groove is slidably connected in sequence on the chute A block supporting device, an angular positioning device, an axial positioning device and a second V-shaped block supporting device, a position-adjustable top pressing device is arranged beside the angular positioning device, and the second V-shaped block supporting device is far away from the One side of the axial positioning device is provided with an axial pressing device; the first V-shaped block supporting device, the angular positioning device, the axial positioning device, the second V-shaped block supporting device, the top pressing device and the axial The positioning or support height of the pressing device can be adjusted.

Preferably, the bottom plate is provided with two parallel sliding grooves, and the bottom plate is provided with bolt mounting holes and positioning pin holes.

Preferably, the first V-shaped block support device and the second V-shaped block support device each include a first adjustable bottom plate, a first support column and a V-shaped block, and the upper surface of the first adjustable bottom plate is connected to the first adjustable bottom plate. The bottom end of a support column is fixedly connected, the upper end of the first support column is slidably connected with the V-shaped block, and the first support column and the V-shaped block are positioned by first fastening bolts.

Preferably, two first elongated through holes extending in the height direction are provided on the side of the V-shaped block, and a first elongated through hole is disposed on the first support column at a position corresponding to the first elongated through hole. A screw hole, the first fastening bolt is connected in the first screw hole through the first elongated through hole.

Preferably, the supporting end of the V-shaped block of the first V-shaped block supporting device includes two V-shaped supporting plates arranged in parallel, and a detection gap is set between the two V-shaped supporting plates.

Preferably, the angular positioning device includes a second adjustable bottom plate, the upper surface of the second adjustable bottom plate is fixedly connected with a second support column, and the second support column is slidably connected with an adjustable support column, so The adjustable support column is positioned on the second support column through a second fastening bolt, and a support block is provided at the upper end of the adjustable support column.

Preferably, the side of the second support column is provided with a height adjustment groove, the adjustable support column is slidably connected in the height adjustment groove, and the side of the adjustable support column is provided with a second extension extending in the height direction. a long through hole, the bottom surface of the groove in the height adjustment groove is provided with a second screw hole at a position corresponding to the second long through hole, and the second fastening bolt passes through the second long through hole connected in the second screw hole.

Preferably, height adjustment bolts are provided on the bottom end surface of the adjustable support column.

Preferably, the axial positioning device includes a third adjustable bottom plate, a third support column is fixedly connected to the upper surface of the third adjustable bottom plate, and an axial positioning block is connected to the third support column, and the The axial positioning block is used for axial contact positioning of the positioning surface of the crankshaft.

Preferably, the top pressing device includes a fourth adjustable bottom plate, a fourth supporting column is fixedly connected to the upper surface of the fourth adjustable bottom plate, and the top of the fourth supporting column is provided with a first pressing mechanism.

Preferably, the first pressing mechanism includes a horizontally arranged first pressing plate, the first pressing plate is provided with a first long through groove whose length direction is perpendicular to the axis of the crankshaft, and an end of the first pressing plate close to the crankshaft is provided with A first pressing head, a first adjusting screw is slidably connected in the first long through groove; one end of the first adjusting screw is threadedly connected to the top end of the fourth support column, and the other end passes through the first adjusting screw The long through groove is threadedly connected with the first manual knob, the first adjusting screw is sleeved with a first spring, and the first spring is arranged between the first pressing plate and the fourth supporting column.

Preferably, the first pressing mechanism further includes a first limit screw, one end of the first limit screw is threadedly connected to the top end of the fourth support column, and the other end passes through the first long through groove Then connect with a nut.

Preferably, the axial pressing device includes a vertically arranged second pressing plate, the second pressing plate is provided with a second long through groove vertically arranged in the length direction, and a side of the second pressing plate close to the crankshaft is provided with a second pressing plate. Two pressing heads, a second adjustment screw is slidably connected in the second long through groove; one end of the second adjustment screw is screwed on the side of the first support column of the second V-block support device, and the other end After passing through the second long through slot, it is threadedly connected with the second manual knob, the second adjusting screw is sleeved with a second spring, and the second spring is arranged on the second pressure plate and the second between the first support columns of the V-block support device.

Preferably, the axial compression device further includes a second limit screw, one end of the second limit screw is screwed on the side of the first support column of the second V-block support device, and the other end is threaded through After passing through the second long through slot, it is connected with a nut.

Preferably, the fourth adjustable bottom plate is provided with two parallel third long through grooves, the length direction of the third long through grooves is parallel to the axis direction of the crankshaft, and the fourth adjustable bottom plate passes through A bolt passing through the third long through slot is connected to the base plate.

It can be seen from the above technical solutions that the fixture for engine crankshaft detection provided by the present invention, by slidingly connecting each positioning and pressing device on the chute, the positions of each positioning and pressing device can be adjusted according to different specifications. The specific structure of the crankshaft is used to adjust the position; by setting the positioning and support devices to a structure with adjustable positioning or support height, the overall height adjustment of the fixture, the adjustment of the axial support position, the adjustment of the angular positioning, and the adjustment of the pressing force can be realized. The adjustment of the jig enables the jig to realize the clamping detection of various types of crankshafts, which improves the compatibility and versatility of the jig. Crankshafts of different specifications and models do not need to be replaced with fixtures, so manpower and material resources are saved, fixture replacement time is saved, and detection efficiency is improved.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic diagram of an angle of use of a fixture for engine crankshaft detection provided by an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the use state of another angle of a clamp for engine crankshaft detection provided by an embodiment of the present utility model;

3 is a schematic structural diagram of a fixture for engine crankshaft detection provided by an embodiment of the present utility model;

4 is a schematic structural diagram of a bottom plate provided by an embodiment of the present invention;

5 is a schematic structural diagram of a first V-block support device provided by an embodiment of the present invention;

6 is a schematic structural diagram of an angular positioning device provided by an embodiment of the present invention;

7 is a schematic structural diagram of a top pressing device provided by an embodiment of the present utility model;

8 is a schematic structural diagram of an axial positioning device provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second V-block support device provided by an embodiment of the present invention.

Detailed ways

The utility model discloses a fixture for crankshaft detection of an engine, which makes the fixture suitable for crankshaft detection of different types, saves manpower and material resources, and improves detection efficiency.

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 9 , the utility model discloses a fixture for engine crankshaft detection, comprising a bottom plate 1 , a first V-block support device 2 , an angular positioning device 3 , an axial positioning device 5 and a second V-block support device 6 .

Among them, the bottom plate 1 provides support for each device on the fixture.

The bottom plate 1 is provided with a chute 11 , and the chute 11 is slidably connected with a first V-shaped block support device 2 , an angular positioning device 3 , an axial positioning device 5 and a second V-shaped block support device 6 in sequence. The first V-shaped block support device 2 and the second V-shaped block support device 6 are used to support the main journals at both ends of the crankshaft 8 .

The angular positioning device 3 is provided with a position-adjustable top pressing device 4. The angular positioning device 3 is used to support the balance block on the crankshaft 8, and the top pressing device 4 is used to press the crankshaft 8 from top to bottom. , the pressing position is the non-detection part, such as the balance structure. The angular positioning device 3 is used in conjunction with the top pressing device 4 to prevent the crankshaft 8 from rotating along the axis.

In order to prevent axial displacement of the crankshaft 8 , an axial positioning device 5 is provided on the bottom plate 1 , and an axial pressing device 7 is provided on the side of the second V-block support device 6 away from the axial positioning device 5 . The axial positioning device 5 prevents the crankshaft 8 from moving to the left, and the axial pressing device 7 prevents the crankshaft 8 from moving to the right. The axial positioning device 5 and the axial pressing device 7 are used together to effectively prevent the crankshaft 8 from being axially displaced. . The above left and right sides are relative to the orientation of FIG. 1 .

In order to adapt to the detection of crankshafts 8 of different sizes, the longitudinal direction of the chute 11 is consistent with the axial direction of the crankshaft 8 to facilitate the position adjustment of the above positioning devices. The support or positioning height of the first V-shaped block support device 2, the angular positioning device 3, the axial positioning device 5, the second V-shaped block support device 6, the top pressing device 4 and the axial pressing device 7 is adjustable, It has a wide range of adaptation, so as to achieve better positioning of crankshafts 8 of different sizes.

In the fixture for engine crankshaft detection of the present invention, by slidingly connecting each positioning and pressing device on the chute 11, the position of each positioning and pressing device can be adjusted according to the specific structure of the crankshaft 8 of different specifications. ; By setting the positioning and supporting devices to a structure with adjustable positioning or support height, the overall height adjustment of the fixture, the adjustment of the axial support position, the adjustment of the angular positioning, and the adjustment of the pressing force can be realized, so that the clamp can be adjusted. The clamping detection of crankshafts 8 of various specifications and models is realized, which improves the compatibility and versatility of the clamps. Crankshafts 8 of different specifications and models do not need to be replaced with fixtures, therefore, manpower and material resources are saved, fixture replacement time is saved, and detection efficiency is improved.

As shown in FIG. 4 , two parallel sliding grooves 11 are provided on the bottom plate 1 , and the longitudinal direction of the sliding grooves 11 is parallel to the axial direction of the crankshaft 8 . The bottom plate 1 is provided with bolt mounting holes 13 and positioning pin holes 14 . When the fixture is installed on the three-coordinate table, the base plate 1 is positioned by the positioning pins connected in the positioning pin holes 14 , and then the base plate 1 is fixed on the three-coordinate table by the bolts passing through the bolt mounting holes 13 .

Specifically, as shown in FIG. 5 , the first V-shaped block support device 2 and the second V-shaped block support device 6 both include a first adjustable bottom plate 21 , a first support column 22 and a V-shaped block 23 . The upper surface of the first adjustable bottom plate 21 is fixedly connected with the bottom end of the first supporting column 22, the upper end of the first supporting column 22 is slidably connected with a V-shaped block 23, and the first supporting column 22 and the V-shaped block 23 are connected by a first fastening bolt. 24 positioning. It can be understood that the V shape in the V-shaped block 23 does not refer to the overall shape of the plate, but refers to the V-shaped opening provided on the V-shaped block 23 for support. In order to facilitate the placement of the crankshaft 8 , the V-shaped port is provided at the top of the V-shaped block 23 .

In a specific embodiment, two first elongated through holes extending in the height direction are provided on the side of the V-shaped block 23 , and a position corresponding to the first elongated through holes is arranged on the first support column 22 . The first screw hole, the first fastening bolt 24 is connected in the first screw hole through the first elongated through hole, so as to realize the locking and positioning of the V-shaped block 23 . The first adjustable bottom plate 21 and the first support column 22 are fixedly connected by bolts. The height of the V-shaped opening on the V-shaped block 23 is adjusted through the first elongated through hole on the V-shaped block 23 . After adjusting to an appropriate height, the V-shaped block 23 is adjusted by the first fastening bolts 24 Lock in position. The above-mentioned extending along the height direction means that the length direction of the first elongated through holes is arranged along the height direction.

As shown in FIG. 5 , in order to prevent the nut end of the first fastening bolt 24 from protruding on the side of the V-shaped block 23 and affecting the detection, the first elongated through hole is a stepped hole, and the screw of the first fastening bolt 24 is a stepped hole. The cap end is sunk in the stepped hole, and the pressing surface of the nut end of the first fastening bolt 24 is pressed against the stepped surface of the stepped hole.

In a specific embodiment, the supporting end of the V-shaped block 23 of the first V-shaped block supporting device 2 includes two V-shaped supporting plates arranged in parallel, and a detection gap is set between the two V-shaped supporting plates. The two V-shaped support plates are integrated with the V-shaped block 23 . The support end of the V-shaped block 23 adopts a spaced support structure, which not only increases the support surface, prevents indentation on the main journal of the crankshaft 8, but also ensures that the use of three When the coordinate measuring machine performs main journal inspection, it is convenient to enter the needle, increase the measurable area, ensure that the measurement of all dimensions can be completed in one clamping, reduce the measurement error caused by multiple clamping, and increase the accuracy of the measurement results. precision.

Further, the angular positioning device 3 includes a second adjustable bottom plate 31, the upper surface of the second adjustable bottom plate 31 is fixedly connected with a second support column 34, and the second support column 34 is slidably connected with an adjustable support column 35, which can be adjusted. The adjustable support column 35 is positioned on the second support column 34 through the second fastening bolt 33 , and a support block 36 is provided on the upper end of the adjustable support column 35 . The second adjustable bottom plate 31 and the second support column 34 are fixedly connected by bolts, the top of the adjustable support column 35 is provided with a groove, one end of the support block 36 is placed in the groove, and is fixedly connected to the adjustable support column 36 by fastening pins. Adjust the support column 35. By adjusting the position of the adjustable support column 35 on the second support column 34 , the height adjustment of the support block 36 is realized, thereby realizing the height adjustment of the entire angular positioning device 3 .

Specifically, the side surface of the second support column 34 is provided with a height adjustment groove, and the adjustable support column 35 is slidably connected in the height adjustment groove. As shown in FIG. 6 , the height adjustment slot is a through slot provided on the side of the second support column 34 with both upper and lower openings, and the lower end of the height adjustment slot is not in contact with the second adjustable bottom plate 31, so that the adjustable support The bottom end surface of the column 35 is provided with a height adjustment bolt 32, the threaded end of the height adjustment bolt 32 is threadedly connected with the bottom end surface of the adjustable support column 35, and the head end of the height adjustment bolt 32 is placed on the upper surface of the second adjustable base plate 31 . When adjusting the height of the angular positioning device 3, the height of the adjustable support column 35 is adjusted by rotating the head end of the height adjustment bolt 32. After the position is determined, the position of the adjustable support column 35 is locked by the second tightening bolt 33. on the second support column 34, so as to achieve the purpose of height adjustment.

Wherein, the side surface of the adjustable support column 35 is provided with a second elongated through hole extending in the height direction, and the groove bottom surface in the height adjustment groove is provided with a second screw hole at a position corresponding to the second elongated through hole , the second fastening bolts 33 are connected in the second screw holes through the second elongated through holes. The above-mentioned extending along the height direction means that the length direction of the second elongated through holes is arranged along the height direction.

In a specific embodiment, as shown in FIG. 8 , the axial positioning device 5 includes a third adjustable bottom plate 51 , and a third support column 52 is fixedly connected to the upper surface of the third adjustable bottom plate 51 . An axial positioning block 54 is connected, and the axial positioning block 54 is used for axially contacting and positioning the positioning surface of the crankshaft 8 . The bottoms of the third adjustable bottom plate 51 and the third support column 52 are fixedly connected by bolts, and the third support column 52 and the axial positioning block 54 are connected by third fastening bolts 53 . In order to facilitate connection, the top end of the third support column 52 is provided with a groove for placing the axial positioning block 54 . The length of the positioning surface of the axial positioning block 54 is set along the vertical direction, so that the positioning height is a range value, so as to adapt to different positioning height requirements.

The top pressing device 4 includes a fourth adjustable bottom plate 41 , a fourth supporting column 42 is fixedly connected to the upper surface of the fourth adjustable bottom plate 41 , and the top of the fourth supporting column 42 is provided with a first pressing mechanism. The bottom end of the fourth support column 42 is connected to the fourth adjustable bottom plate 41 by bolts. The first pressing mechanism is used to press the crankshaft 8 from top to bottom, and the pressing position is a balance structure. turn.

Specifically, as shown in FIG. 7 , the first pressing mechanism includes a horizontally arranged first pressing plate 46 . The first pressing plate 46 is provided with a first long through groove whose length direction is perpendicular to the axis of the crankshaft 8 . The first pressing plate 46 One end close to the crankshaft 8 is provided with a first pressing head 47 , and a first adjusting screw is slidably connected in the first long through groove. By arranging the first long through groove, the position of the first pressing head 47 can be easily adjusted. . One end of the first adjustment screw is threadedly connected to the top of the fourth support column 42, and the other end is threadedly connected to the first manual knob 45 after passing through the first long through slot. The first adjustment screw is sleeved with a The first spring 44 is disposed between the first pressing plate 46 and the fourth supporting column 42 . The pressing end of the first pressing head 47 is made of nylon.

After the crankshaft 8 is correctly placed on the first V-block supporting device 2 and the second V-block supporting device 6, manually push the first pressing plate 46 along the first long through groove to the pressing position, and rotate the first pressing plate 46. A manual knob 45, the first manual knob 45 presses the first pressing plate 46 and moves downward, and the first pressing plate 46 compresses the first spring 44 until the pressing surface of the first pressing head 47 is pressed to the pressing position on the crankshaft 8 , the crankshaft 8 is pressed and positioned to prevent the crankshaft 8 from rotating. When the top pressing device 4 is disassembled after the detection, it is only necessary to turn the first manual knob 45 in the opposite direction, and the first spring 44 moves the position of the first pressing plate 46 upward under the action of its own elastic force, so that the first pressing head 47 and the crankshaft are moved upward. 8 is no longer in contact, and the first pressure plate 46 is pulled away from the crankshaft 8 for removal and next installation of the crankshaft 8 .

Further, the first pressing mechanism further includes a first limit screw 43, one end of the first limit screw 43 is threadedly connected to the top of the fourth support column 42, and the other end passes through the first long through slot. Connect with a nut. By arranging the first limit screw 43 , it is convenient to limit the position of the first pressing plate 46 after positioning and pressing, so as to prevent the first pressing plate 46 from shaking during the detection process. Furthermore, in order to improve the limiting ability, the first limiting screw 43 is located on both sides of the first pressing plate 46 and is threadedly connected with a nut, which is convenient for positioning the upper and lower sides of the first pressing plate 46 . When the top pressing device 4 is disassembled after the detection, first loosen the nuts pressed on the upper and lower sides of the first pressing plate 46 and then rotate the first manual knob 45 in the opposite direction.

In the above embodiment, one end of the first adjustment screw and the first limit screw 43 connected to the top of the fourth support column 42 can be directly connected to the fourth support column through the threaded hole provided on the top surface of the fourth support column 42 The top of the fourth support column 42 can also be connected to the top of the fourth support column 42 through a nut welded on the top surface of the fourth support column 42, which is not limited here.

Among them, the axial pressing device 7 includes a vertically arranged second pressing plate 74 . The second pressing plate 74 is provided with a second long through groove arranged vertically in the longitudinal direction of the bottom plate 1 , and a side of the second pressing plate 74 close to the crankshaft 8 is provided with a first Two pressing heads 75 , a second adjusting screw is slidably connected to the second long through groove; , the other end is threadedly connected with the second manual knob 73 after passing through the second long through slot, the second adjusting screw is sleeved with a second spring 72, and the second spring 72 is arranged on the second pressing plate 74 and the first between the first supporting columns 22 of the two V-shaped block supporting devices 6 .

When the crankshaft 8 is correctly placed on the first V-block support device 2 and the second V-block support device 6, manually push the second pressing plate 74 along the second long through groove to the pressing position, and rotate the first Two manual knobs 73 , the second manual knob 73 presses the second pressing plate 74 and moves to the direction close to the axial positioning surface of the crankshaft 8 , the second pressing plate 74 compresses the second spring 72 until the second pressing head 75 is pressed The surface is pressed to the position of the pressing and positioning surface on the crankshaft 8, and the crankshaft 8 is pressed and positioned to prevent the axial displacement of the crankshaft 8. For the disassembly process, refer to the disassembly process of the first pressing mechanism, which will not be repeated here. The pressing end of the second pressing head 75 is made of nylon.

The axial pressing device 7 also includes a second limit screw 71, one end of the second limit screw 71 is threadedly connected to the side of the first support column 22 of the second V-block support device 6, and the other end passes through the first support column 22 of the second V-block support device 6. The two long through grooves are connected with a nut. In order to improve the limiting capability, a nut is threadedly connected to both sides of the second limiting screw 71 on the second pressing plate 74 to facilitate the positioning of the left and right sides of the second pressing plate 74 . When the detection is completed and the axial pressing device 7 is disassembled, first loosen the nuts that are positioned on the left and right sides of the second pressing plate 74, and then rotate the second manual knob 73 in the opposite direction.

In a specific embodiment, as shown in FIG. 7 , in order to facilitate the adjustment of the position of the top pressing device 4 on the bottom plate 1 , the fourth adjustable bottom plate 41 is provided with two parallel third long through grooves. , the length direction of the third long through slot is parallel to the axis direction of the crankshaft 8 , and the fourth adjustable bottom plate 41 is connected to the bottom plate 1 by bolts passing through the third long through slot. The setting of the third long through groove enables the top pressing device 4 to realize the position adjustment in the left-right direction, and the setting of the first long through groove on the first pressing mechanism enables the top pressing device 4 to Position adjustment in the direction close to or away from the crankshaft 8 is achieved.

The bottom surfaces of the first adjustable bottom plate 21 , the second adjustable bottom plate 31 and the third adjustable bottom plate 51 are all provided with sliders matching the chute 11 , which is convenient for the first adjustable bottom plate 21 and the second adjustable bottom plate 31 . The third adjustable bottom plate 51 guides when moving. The first adjustable bottom plate 21 , the second adjustable bottom plate 31 , and the third adjustable bottom plate 51 are all provided with connecting through holes, and the positions of the connecting through holes correspond to the positions of the sliding grooves 11 . A position adjustment T-block 12 is slidably connected in the chute 11 , and the first adjustable bottom plate 21 , the second adjustable bottom plate 31 , and the third adjustable bottom plate 51 are all connected at corresponding positions by positioning screws passing through the connecting through holes. Position adjustment T-block 12. The positions of the first V-shaped block support device 2 , the angular positioning device 3 , the axial positioning device 5 and the second V-shaped block support device 6 are adjusted by the position adjustment T-shaped block 12 sliding in the chute 11 .

The fixture used for engine crankshaft detection of the present invention has the functions of error prevention and error correction, which effectively avoids the operator's incorrect placement of the crankshaft and unrealized positioning. In the fixture, the crankshaft 8 cannot be placed on the fixture, which ensures that the operator finds the wrong placement direction in time and corrects it in time.

In the fixture used for engine crankshaft detection of the utility model, each positioning device can adapt to different height positioning, and can independently adjust the position, and the supporting device can adjust the supporting position according to the detection scheme, so that the adaptability of the fixture is strong. , It can meet the measurement and clamping operation of crankshaft 8 of different specifications and models.

The fixture for engine crankshaft detection of the utility model has the advantages of simple overall structure, simple structure of each part, low processing cost, and at the same time, it can meet the convenience of measurement by measurement engineers. Measurement needs.

The fixture used for engine crankshaft detection of the present invention can easily realize the repeated positioning of the crankshaft 8, that is, each crankshaft 8 is in the same state when placed on the fixture, and there is no need for a three-coordinate measuring machine to perform repeated spotting and positioning. During measurement, the measurement time can be greatly reduced and the measurement efficiency can be improved.

In the description of this solution, it should be understood that the orientations or positions indicated by the terms "upper", "lower", "vertical", "inner", "outer", etc. are based on the orientations or positions shown in the drawings The relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present solution.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of this scheme, "a plurality of" means two or more, unless otherwise expressly and specifically defined.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. The clamp for detecting the crankshaft of the engine comprises a bottom plate (1), and is characterized in that a sliding groove (11) is formed in the bottom plate (1), and the length direction of the sliding groove (11) is consistent with the axial direction of a crankshaft (8); a first V-shaped block supporting device (2), an angular positioning device (3), an axial positioning device (5) and a second V-shaped block supporting device (6) are sequentially connected to the sliding chute (11) in a sliding mode, a top pressing device (4) with an adjustable position is arranged beside the angular positioning device (3), and an axial pressing device (7) is arranged on one side, away from the axial positioning device (5), of the second V-shaped block supporting device (6); the positioning or supporting heights of the first V-shaped block supporting device (2), the angular positioning device (3), the axial positioning device (5), the second V-shaped block supporting device (6), the top pressing device (4) and the axial pressing device (7) are all adjustable.

2. The clamp for detecting the engine crankshaft according to the claim 1, characterized in that the bottom plate (1) is provided with two parallel sliding grooves (11), and the bottom plate (1) is provided with a bolt mounting hole (13) and a positioning pin hole (14).

3. The clamp for the engine crankshaft detection according to claim 1, wherein the first V-shaped block supporting device (2) and the second V-shaped block supporting device (6) each comprise a first adjustable bottom plate (21), a first supporting upright (22) and a V-shaped block (23), the upper surface of the first adjustable bottom plate (21) is fixedly connected with the bottom end of the first supporting upright (22), the V-shaped block (23) is connected to the upper end of the first supporting upright (22) in a sliding mode, and the first supporting upright (22) and the V-shaped block (23) are positioned through a first fastening bolt (24).

4. The clamp for engine crankshaft detection according to claim 3, characterized in that two first elongated through holes extending in the height direction are provided on the side surface of the V-shaped block (23), a first screw hole is provided on the first support pillar (22) at a position corresponding to the first elongated through holes, and the first fastening bolt (24) passes through the first elongated through holes and is connected in the first screw hole.

5. The clamp for engine crankshaft detection according to claim 3, characterized in that the support end of the V-block (23) of the first V-block support device (2) comprises two V-shaped support plates arranged in parallel, with a detection gap being provided between the two V-shaped support plates.

6. The clamp for the engine crankshaft detection according to claim 1, wherein the angular positioning device (3) comprises a second adjustable bottom plate (31), a second support column (34) is fixedly connected to the upper surface of the second adjustable bottom plate (31), an adjustable support column (35) is slidably connected to the second support column (34), the adjustable support column (35) is positioned on the second support column (34) through a second fastening bolt (33), and a support block (36) is arranged at the upper end of the adjustable support column (35).

7. The clamp for engine crankshaft detection according to claim 6, characterized in that a height adjustment groove is formed in a side surface of the second support column (34), the adjustable support column (35) is slidably connected in the height adjustment groove, a second elongated through hole extending in a height direction is formed in the side surface of the adjustable support column (35), a second screw hole is formed in a position, corresponding to the second elongated through hole, of a bottom surface of the groove in the height adjustment groove, and the second fastening bolt (33) penetrates through the second elongated through hole to be connected in the second screw hole.

8. The clamp for engine crankshaft detection according to claim 7, characterized in that a height adjusting bolt (32) is provided on the bottom end face of the adjustable support pillar (35).

9. The clamp for detecting the crankshaft of the engine according to claim 1, wherein the axial positioning device (5) comprises a third adjustable bottom plate (51), a third support column (52) is fixedly connected to the upper surface of the third adjustable bottom plate (51), an axial positioning block (54) is connected to the third support column (52), and the axial positioning block (54) is used for axially positioning a positioning surface of the crankshaft (8) in a contact manner.

10. The clamp for the engine crankshaft detection according to claim 1, characterized in that the top pressing device (4) comprises a fourth adjustable bottom plate (41), a fourth supporting upright (42) is fixedly connected to the upper surface of the fourth adjustable bottom plate (41), and a first pressing mechanism is arranged at the top end of the fourth supporting upright (42).

11. The clamp for detecting the crankshaft of the engine according to claim 10, wherein the first pressing mechanism comprises a first pressing plate (46) which is horizontally arranged, a first long through groove with the length direction perpendicular to the axis of the crankshaft (8) is formed in the first pressing plate (46), a first pressing head (47) is arranged at one end, close to the crankshaft (8), of the first pressing plate (46), and a first adjusting screw rod is slidably connected in the first long through groove; one end threaded connection of first adjusting screw is in the top of fourth support post (42), and the other end passes behind the first long logical groove with first manual knob (45) threaded connection, the cover is equipped with first spring (44) on the first adjusting screw, first spring (44) set up first clamp plate (46) with between fourth support post (42).

12. The clamp for detecting the crankshaft of the engine as claimed in claim 11, wherein the first pressing mechanism further comprises a first limit screw (43), one end of the first limit screw (43) is connected to the top end of the fourth supporting upright (42) in a threaded manner, and the other end of the first limit screw passes through the first long through slot and then is connected with a nut.

13. The clamp for detecting the crankshaft of the engine according to claim 1, wherein the axial pressing device (7) comprises a second pressing plate (74) which is vertically arranged, a second long through groove which is vertically arranged in the length direction is formed in the second pressing plate (74), a second pressing head (75) is arranged on one side, close to the crankshaft (8), of the second pressing plate (74), and a second adjusting screw rod is slidably connected in the second long through groove; one end of the second adjusting screw is in threaded connection with the side face of the first supporting upright post (22) of the second V-shaped block supporting device (6), the other end of the second adjusting screw penetrates through the second long through groove and then is in threaded connection with the second manual knob (73), the second adjusting screw is sleeved with a second spring (72), and the second spring (72) is arranged between the second pressing plate (74) and the first supporting upright post (22) of the second V-shaped block supporting device (6).

14. The clamp for engine crankshaft detection according to claim 13, characterized in that the axial compression device (7) further comprises a second limit screw (71), one end of the second limit screw (71) is screwed on the side of the first support pillar (22) of the second V-block support device (6), and the other end of the second limit screw passes through the second long through slot and is connected with a nut.

15. The clamp for engine crankshaft detection according to claim 10, wherein two third long through slots are arranged in parallel on the fourth adjustable bottom plate (41), the length direction of the third long through slot is arranged in parallel to the axial direction of the crankshaft (8), and the fourth adjustable bottom plate (41) is connected to the bottom plate (1) through bolts penetrating through the third long through slot.

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