CN214666679U

CN214666679U - Three-coordinate measuring and positioning fixture for engine cylinder cover

Info

Publication number: CN214666679U
Application number: CN202023205250.9U
Authority: CN
Inventors: 吴永辉; 夏承睿; 吴勤; 冯卫坚; 杨柯
Original assignee: GAC Motor Co Ltd
Current assignee: GAC Motor Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-11-09
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to an engine cylinder lid dimensional measurement's technical field, more specifically relates to an engine cylinder lid three-dimensional measurement positioning fixture, comprising a base plate, the bottom plate top is equipped with the bracing piece, bottom plate top interval is equipped with two at least clamping mechanism, clamping mechanism contain the stand of being connected with the bottom plate, with stand swing joint's stopper and set up in the gag lever post of stopper. The utility model discloses an engine cylinder lid three-coordinate measuring positioning fixture installs on three-coordinate measuring equipment's workstation, during the use, places down the cylinder cap side on the engine cylinder lid three-coordinate measuring positioning fixture, the bracing piece supports the cylinder cap, and the gag lever post on the clamping mechanism presss from both sides tight cylinder cap, realizes pressing from both sides tight fixedly to the clamp of cylinder cap, and positioning accuracy is high, and the location in-process is little with cylinder cap area of contact, does not influence the full-scale measurement of cylinder cap.

Description

Three-coordinate measuring and positioning fixture for engine cylinder cover

Technical Field

The utility model relates to an engine cylinder lid dimensional measurement's technical field, more specifically relates to an engine cylinder lid three-coordinate measuring positioning fixture.

Background

The engine cylinder cover is one of the most critical parts in the engine, the processing technology is complex, the precision requirement is high, and the processing quality directly influences the overall performance of the engine. In order to ensure that the machining size of the cylinder cover meets the requirements of drawings, the engine cylinder cover needs to be regularly measured by three coordinates in the machining process. In the current stage, when the dimension of the cylinder cover is measured by using three coordinates, the cylinder cover to be measured is horizontally placed, and a clamping method that at least three supporting seats support three points is adopted. By adopting the clamping method, the position, the height and the measuring efficiency of the supporting seat are required to be adjusted when different types of cylinder covers are replaced every time in measurement, and the placing surface is shielded because the cylinder covers are horizontally placed, so that a measuring probe cannot be inserted into the cylinder cover to measure the corresponding dimension.

Chinese patent CN201903337U discloses a cylinder cap class part universal fixturing is used in three-dimensional detection, the on-line screen storage device comprises a base, the interval is equipped with two pairs of stands on the base, every forms a U type groove between every pair of stand, still be equipped with at least one supporting screw on the base between two pairs of stands, this scheme uses the cooperation of the U type groove that two pairs of stands formed and supporting screw to support the cylinder cap that awaits measuring and fix a position, and the location is not accurate, can shelter from the cylinder cap part surface that awaits measuring among the positioning process, leads to unable full size measurement that once only satisfies the drawing requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide an engine cylinder lid three-coordinate measurement positioning fixture, it is spacing to press from both sides the clamp mechanism that sets up through the interval to press from both sides the cylinder lid, and positioning accuracy is high, and the positioning process in little with cylinder lid area of contact, does not influence the full-scale measurement of cylinder lid.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the utility model provides an engine cylinder lid three-coordinate measuring positioning fixture, includes the bottom plate, the bottom plate top is equipped with the bracing piece, bottom plate top interval is equipped with two at least clamping mechanism, clamping mechanism contain the stand of being connected with the bottom plate, with stand swing joint's stopper and set up in the gag lever post of stopper.

The utility model discloses an engine cylinder lid three-coordinate measuring positioning fixture installs on three-coordinate measuring equipment's workstation, during the use, places down the cylinder cap side on the engine cylinder lid three-coordinate measuring positioning fixture, the bracing piece supports the cylinder cap, and the gag lever post on the clamping mechanism presss from both sides tight cylinder cap, realizes pressing from both sides tight fixedly to the clamp of cylinder cap, and positioning accuracy is high, and the location in-process is little with cylinder cap area of contact, does not influence the full-scale measurement of cylinder cap.

Furthermore, a plurality of limiting blocks are provided with a plurality of first limiting holes, and the limiting blocks are fixed on the stand columns through fasteners penetrating through the limiting holes.

Furthermore, the limiting block is also provided with an adjustable limiting piece, and the limiting rod is in threaded connection with the limiting piece.

Furthermore, the limiting sheet is provided with a second limiting hole connected with the fastening piece.

Furthermore, the limiting blocks comprise a first limiting block, a second limiting block and a third limiting block which are sequentially arranged along the axial direction of the stand column.

Further, the gag lever post including set up in the first base plane gag lever post of the one end of first stopper, set up in the second base plane gag lever post of the one end of third stopper with set up in the elasticity gag lever post of second stopper, first base plane gag lever post, second base plane gag lever post and the cooperation of elasticity gag lever post is vertically spacing to the cylinder cap.

Furthermore, the limiting rod further comprises a first side limiting rod arranged at one end of the first limiting block and a second side limiting rod arranged at one end of the third limiting block, and the first side limiting rod and the second side limiting rod are used for transversely limiting the cylinder cover.

Further, the bottom plate is of a flat plate structure, the bottom plate is provided with a plurality of fixing holes, the fixing holes are communicated in the thickness direction, the supporting rods are connected with the bottom plate through first connecting pieces penetrating through the fixing holes, and the bottom plate is vertically limited to the cylinder cover.

Furthermore, the support rod comprises a connecting plate, a support column and a support block, one end of the support column is fixed on the bottom plate through the connecting plate and the first connecting piece, and the other end of the support block and the support column are fixed into an inverted L-shaped structure through a second connecting piece.

Furthermore, the bottom plate is provided with a plurality of positioning holes, the plurality of positioning holes penetrate through the bottom plate in the thickness direction, and the bottom plate is connected to the workbench through a third connecting piece and the positioning holes.

The utility model discloses an engine cylinder lid three-coordinate measuring positioning fixture compares with the background art, and the beneficial effect of production does:

the clamping mechanism that the interval set up presss from both sides tightly spacing to the cylinder cap, and positioning accuracy is high, and the positioning process in with cylinder cap area of contact little, do not influence the full-scale measurement of cylinder cap.

Drawings

Fig. 1 is a schematic structural view of an engine cylinder head three-coordinate measuring and positioning fixture in an embodiment of the present invention;

fig. 2 is a schematic view of an embodiment of the present invention illustrating an engine cylinder head three-coordinate measuring and positioning fixture;

in the drawings: 1-a bottom plate; 2-a clamping mechanism; 21-upright column; 22-a limiting block; 221-a first stopper; 222-a second stopper; 223-a third stopper; 23-a limiting sheet; 231-a second limiting hole; 24-a stop lever; 241-a first bottom plane stop lever; 242-a second bottom plane stop bar; 243-elastic limit rod; 244-first lateral restraint bar; 245-a second side stop bar; 3-supporting rods; 31-a connecting plate; 32-support column; 33-a support block; 4-cylinder cover.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

The utility model provides an engine cylinder lid three-coordinate measuring positioning fixture, as shown in figure 1, includes

bottom plate

1, 1 top of bottom plate is equipped with

bracing piece

3, 1 top interval of bottom plate is equipped with two at least clamping mechanism 2, clamping mechanism 2 contains the stand 21 of being connected with bottom plate 1, with stand 21 swing joint's stopper 22 and set up in stopper 22's gag lever post 24.

The three-coordinate measuring and positioning fixture for the engine cylinder cover is installed on a workbench of three-coordinate measuring equipment, during use, the side face of the cylinder cover 4 is placed downwards on the three-coordinate measuring and positioning fixture for the engine cylinder cover, the supporting rod 3 supports the cylinder cover 4, the limiting rod 24 on the clamping mechanism 2 clamps the cylinder cover 4, clamping and fixing of the cylinder cover 4 are achieved, positioning accuracy is high, the contact area with the cylinder cover 4 in the positioning process is small, and full-size measurement of the cylinder cover 4 is not affected.

In one embodiment, the plurality of limiting blocks 22 are provided with a plurality of first limiting holes, the limiting blocks 22 are fixed on the upright post 21 by fasteners passing through the first limiting holes, specifically, the limiting blocks 22 move up and down along the upright post 21, and after the limiting blocks 22 move to proper positions, the fasteners pass through the first limiting holes on the limiting blocks 22 to fix the limiting blocks 22 on the upright post 21.

In one embodiment, the fastening member is a bolt, and it should be noted that other fastening members and components for detachably fastening the limiting block 22 and the upright post 21 are all suitable for the present invention.

In one embodiment, as shown in fig. 1, the limiting block 22 is further provided with an adjustable limiting piece 23, the limiting rod 24 is in threaded connection with the limiting piece 23, and the position of the limiting rod 24 can be adjusted through threads to limit the cylinder cover 4.

In one embodiment, the limiting piece 23 is provided with a second limiting hole 231 connected with the fastening piece, specifically, the position of the limiting piece 22 on the upright post 21 is adjusted according to the model of the cylinder head 4, the position of the limiting piece 23 on the limiting piece 22 is adjusted, the fastening piece is screwed through the first limiting hole and the second limiting hole 231, and the limiting piece 23 and the limiting piece 22 are fixed.

In one embodiment, as shown in fig. 1, the limiting block 22 includes a first limiting block 221, a second limiting block 222, and a third limiting block 223 sequentially arranged along the axial direction of the upright column 21, and the first limiting block 221, the second limiting block 222, and the third limiting block 223 are used in cooperation.

In one embodiment, as shown in fig. 1, the limiting rod 24 includes a first bottom plane limiting rod 241 disposed at one end of the first limiting block 221, a second bottom plane limiting rod 242 disposed at one end of the third limiting block 223, and an elastic force limiting rod 243 disposed at the second limiting block 222, and the first bottom plane limiting rod 241, the second bottom plane limiting rod 242, and the elastic force limiting rod 243 cooperate to longitudinally limit the cylinder head 4.

In one embodiment, as shown in fig. 1, the top ends of the first bottom plane limiting rod 241, the second bottom plane limiting rod 242 and the elastic force limiting rod 243 are all cylindrical, the bottom surface of the first bottom plane limiting rod 241 and the bottom surface of the second bottom plane limiting rod 242 press the cylinder cover 4, the side surface of the elastic force limiting rod 243 presses the cylinder cover 4, and the direction in which the bottom surface of the first bottom plane limiting rod 241 and the bottom surface of the second bottom plane limiting rod 242 press the cylinder cover 4 is opposite to the direction in which the side surface of the elastic force limiting rod 243 presses the cylinder cover 4.

In one embodiment, the second stopper 222 has a sliding groove, the elastic stopper 243 is movably connected to the sliding block capable of sliding along the sliding groove, the elastic stopper 243 is composed of a fixed stopper screw and a cylinder, and the side surface of the cylinder extrudes the cylinder cover 4.

In one embodiment, as shown in fig. 1, the limiting rod 24 further includes a first side limiting rod 244 disposed at one end of the first limiting block 221 and a second side limiting rod 245 disposed at one end of the third limiting block 223, and the first side limiting rod 244 and the second side limiting rod 245 limit the cylinder head 4 laterally.

In one embodiment, as shown in fig. 1, two clamping mechanisms 2 are provided, the top ends of the two first side limiting rods 244 and the two second side limiting rods 245 are cylindrical, the side surfaces of the two first side limiting rods 244 and the two second side limiting rods 245 extrude the cylinder cover 4, the extruding directions of the two first side limiting rods 244 to the cylinder cover 4 are opposite, and the extruding directions of the two second side limiting rods 245 to the cylinder cover 4 are opposite.

In one embodiment, the bottom plate 1 is a flat plate structure, the bottom plate 1 is provided with a plurality of fixing holes, the fixing holes penetrate through the bottom plate 1 in the thickness direction, and the support rod 3 is connected with the bottom plate 1 through a first connecting piece penetrating through the fixing holes to vertically limit the cylinder cover 4.

In one embodiment, the fixing holes are fixing bolt holes, the first connecting member is a fixing bolt, and it should be noted that, other connecting members capable of realizing the present invention is applicable to both the connecting member fixedly connecting the support rod 3 and the bottom plate 1 and the assembly thereof.

In one embodiment, as shown in fig. 1, the support rod 3 includes a connecting plate 31, a support pillar 32 and a support block 33, one end of the support pillar 32 is fixed to the bottom plate 1 through the connecting plate 31 and a first connecting member, and the other end of the support block 33 and the support pillar 32 are fixed to be an inverted "L" shaped structure through a second connecting member, so that the contact area with the cylinder head 4 can be reduced, and the measurement probe can measure the size of the support surface of the cylinder head 4 conveniently, thereby not affecting the full-size measurement of the cylinder head 4.

In one embodiment, the second connecting member is a bolt, and it should be noted that other connecting members and components thereof capable of fixedly connecting the other end of the supporting block 33 and the supporting column 32 are all suitable for the present invention.

In one embodiment, as shown in fig. 1 and 2, four support rods 3 are provided and are respectively arranged at corners of a support surface of the cylinder cover 4 to ensure that the cylinder cover 4 to be tested is uniformly stressed and is stably supported, and the cylinder cover 4 is vertically limited; the bottom surface of the first bottom plane limiting rod 241 and the bottom surface of the second bottom plane limiting rod 242 extrude the cylinder cover 4, the side surface of the elastic limiting rod 243 extrudes the cylinder cover 4, the direction of the bottom surface of the first bottom plane limiting rod 241 and the bottom surface of the second bottom plane limiting rod 242 extruding the cylinder cover 4 is opposite to the direction of the side surface of the elastic limiting rod 243 extruding the cylinder cover 4, and longitudinal limiting is carried out on the cylinder cover 4; the two clamping mechanisms 2 are arranged, the top ends of the two first side limiting rods 244 and the two second side limiting rods 245 are cylindrical, the side surfaces of the two first side limiting rods 244 and the two second side limiting rods 245 extrude the cylinder cover 4, the extruding directions of the two first side limiting rods 244 to the cylinder cover 4 are opposite, the extruding directions of the two second side limiting rods 245 to the cylinder cover 4 are opposite, and the cylinder cover 4 is transversely limited; through to 4 horizontal, vertical and vertical spacing of cylinder cap, fixed centre gripping cylinder cap 4 is fixed the cylinder cap 4 and is fixed a position the cylinder cap 4.

In one embodiment, the base plate 1 is provided with a plurality of positioning holes which penetrate the base plate 1 in the thickness direction, and the base plate 1 is connected to the table through the third connecting member and the positioning holes.

In one embodiment, the positioning holes are bolt holes, the third connecting member is a bolt, and it should be noted that the other connecting members are used to connect the bottom plate 1 and the worktable, and the assembly thereof.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an engine cylinder lid three-dimensional measurement positioning fixture, includes bottom plate (1), bottom plate (1) top is equipped with bracing piece (3), its characterized in that, bottom plate (1) top interval is equipped with two at least clamping mechanism (2), clamping mechanism (2) contain stand (21) be connected with bottom plate (1), with stand (21) swing joint's stopper (22) and set up in stopper (24) of stopper (22).

2. The engine cylinder head three-coordinate measuring and positioning fixture as recited in claim 1, characterized in that a plurality of the limit blocks (22) are provided with a plurality of first limit holes, and the limit blocks (22) are fixed to the pillars (21) by fasteners passing through the first limit holes.

3. The engine cylinder head three-coordinate measuring and positioning fixture as recited in claim 2, characterized in that the limiting block (22) is further provided with an adjustable limiting piece (23), and the limiting rod (24) is in threaded connection with the limiting piece (23).

4. The engine cylinder head three-coordinate measuring and positioning fixture as recited in claim 3, characterized in that the limiting sheet (23) is provided with a second limiting hole (231) connected with the fastener.

5. The engine cylinder head three-coordinate measuring and positioning fixture as recited in claim 4, characterized in that the stopper (22) comprises a first stopper (221), a second stopper (222) and a third stopper (223) arranged in sequence along the axial direction of the pillar (21).

6. The three-coordinate measuring and positioning fixture of the engine cylinder head as recited in claim 5, characterized in that the limiting rod (24) comprises a first bottom plane limiting rod (241) disposed at one end of the first limiting block (221), a second bottom plane limiting rod (242) disposed at one end of the third limiting block (223), and an elastic force limiting rod (243) disposed at the second limiting block (222), wherein the first bottom plane limiting rod (241), the second bottom plane limiting rod (242), and the elastic force limiting rod (243) cooperate to longitudinally limit the cylinder head (4).

7. The engine cylinder head three-coordinate measuring and positioning fixture as recited in claim 5 or 6, characterized in that the stop lever (24) further comprises a first side stop lever (244) disposed at one end of the first stop block (221) and a second side stop lever (245) disposed at one end of the third stop block (223), the first side stop lever (244) and the second side stop lever (245) laterally limit the cylinder head (4).

8. The three-coordinate measuring and positioning fixture of the engine cylinder head as claimed in claim 1, wherein the bottom plate (1) is a flat plate structure, the bottom plate (1) is provided with a plurality of fixing holes, the fixing holes penetrate through the bottom plate (1) in the thickness direction, and the supporting rod (3) is connected with the bottom plate (1) through a first connecting piece penetrating through the fixing holes to vertically limit the cylinder head (4).

9. The three-coordinate measuring and positioning fixture of the engine cylinder head as claimed in claim 8, wherein the supporting rod (3) comprises a connecting plate (31), a supporting column (32) and a supporting block (33), one end of the supporting column (32) is fixed on the bottom plate (1) through the connecting plate (31) and a first connecting piece, and the other end of the supporting block (33) and the supporting column (32) are fixed into an inverted L-shaped structure through a second connecting piece.

10. The engine cylinder head three-coordinate measuring and positioning fixture according to claim 9, characterized in that the base plate (1) is provided with a plurality of positioning holes, the plurality of positioning holes penetrate through the base plate (1) in the thickness direction, and the base plate (1) is connected to a workbench through a third connecting piece and the positioning holes.