CN214407241U

CN214407241U - Connecting rod three-coordinate inspection clamp

Info

Publication number: CN214407241U
Application number: CN202022920363.0U
Authority: CN
Inventors: 夏承睿; 吴勤; 吴永辉; 冯卫坚; 杨柯
Original assignee: GAC Motor Co Ltd
Current assignee: GAC Motor Co Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-15
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to the technical field of connecting rod detection, more specifically, relate to a connecting rod three-coordinate inspection jig, the both ends of connecting rod are equipped with first head and second head respectively, first head is equipped with the first hole, the second head is equipped with the second hole; the inspection clamp comprises a positioning bottom plate, and a plurality of groups of first positioning assemblies and second positioning assemblies which are fixedly arranged on the positioning bottom plate, wherein each first positioning assembly is provided with a first positioning plane, the first head is positioned on the first positioning plane, each second positioning assembly is provided with a second positioning plane, the second head is positioned on the second positioning plane, and the first positioning plane and the second positioning plane are coplanar. The utility model can realize the clamping and positioning of a plurality of connecting rods by one-time clamping, is convenient for rapidly completing the full-size measurement of one set of connecting rods, and effectively improves the detection efficiency; the connecting rod can not be shielded in the measuring process, the full-size measurement of the connecting rod is not influenced, and the processing size and form and position tolerance detection required by a drawing can be met at one time.

Description

Connecting rod three-coordinate inspection clamp

Technical Field

The utility model relates to a technical field that the connecting rod detected, more specifically relates to a connecting rod three-coordinate inspection anchor clamps.

Background

The connecting rod is one of the main core components on the engine, and the connecting rod component needs to bear the action of gas acting force transmitted by a piston pin, the swinging of the connecting rod component and the reciprocating inertia force of a piston group during the operation of the engine, the magnitude and the direction of the forces are periodically changed, so that the connecting rod has high strength, toughness and fatigue resistance. In order to ensure that the connecting rod has enough fatigue strength and structural rigidity, the machining size and form and position tolerance of the connecting rod must meet the requirements of a drawing, and therefore, three coordinates are required to be periodically used for detecting various position sizes of the connecting rod part in the machining process. For a multi-cylinder engine, the number of link components used is typically greater than one, for example four for a four-cylinder engine. Connecting rod three-coordinate inspection frock clamp is through using two pairs of rectangle locating pieces at present stage, and the tight location that comes of connecting rod body pole clamp, detects at every turn and can only detect single connecting rod, can make the connecting rod produce slight deformation when the clamp force is too big, and the clamp force undersize can not reach the tight effect of location again, and the measurement accuracy is end, and the process of adjusting the clamp force is also comparatively loaded down with trivial details.

Chinese patent CN207874038U discloses a connecting rod three-coordinate inspection tool fixture, which comprises a base, wherein the base is provided with a bottom plate for supporting a connecting rod, a front baffle plate for limiting the front side of the connecting rod, and a rear baffle plate for limiting the rear side of the connecting rod, and the front baffle plate is provided with a plurality of spring pressing devices. Above-mentioned scheme is convenient for three-coordinate measurement personnel to inspect the connecting rod fast, avoids the error that operating personnel brought in, is applicable to three-coordinate measurement connecting rod in batches, however, above-mentioned scheme detects at every turn and can only detect single connecting rod, detection efficiency is low, and uses bottom plate supporting connecting rod work, uses the spacing connecting rod front side of preceding baffle, uses the spacing connecting rod rear side of backplate, can't once only satisfy the machining dimension and the form and position tolerance detection of drawing requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a connecting rod three-coordinate inspection anchor clamps, many connecting rod clamping location can be realized to clamping, can accomplish the full-scale measurement of one set of connecting rod fast to improve detection efficiency and detection precision.

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

providing a connecting rod three-coordinate inspection clamp, wherein a first head part and a second head part are respectively arranged at two ends of a connecting rod, a first hole is formed in the first head part, and a second hole is formed in the second head part; the inspection clamp comprises a positioning bottom plate, and a plurality of groups of first positioning assemblies and second positioning assemblies which are fixedly arranged on the positioning bottom plate, wherein each first positioning assembly is provided with a first positioning plane, the first head is positioned on the first positioning plane, each second positioning assembly is provided with a second positioning plane, the second head is positioned on the second positioning plane, and the first positioning plane and the second positioning plane are coplanar.

The utility model discloses a connecting rod three-coordinate inspection anchor clamps, first locating component realize the location of the first head of connecting rod, the second locating component realizes the location of the second head of connecting rod, the setting of multiunit first locating component and second locating component makes the clamping that can realize many connecting rods fix a position in a clamping process to accomplish the full-size measurement of a set of connecting rod fast, effectively improve detection efficiency; the first positioning assembly and the second positioning assembly cannot shield the connecting rod in the positioning process, the full-size measurement of the connecting rod is not affected, and the machining size and form and position tolerance detection required by a drawing can be met at one time.

Furthermore, the first positioning assembly comprises a first positioning block and a second positioning block, the first positioning block and the second positioning block are oppositely arranged, and the first head is clamped between the first positioning block and the second positioning block.

Furthermore, the first positioning block is provided with a first step surface, the second positioning block is provided with a second step surface, the first positioning block or the second positioning block is connected with a pressing piece, and the pressing piece penetrates through the first positioning block or the second positioning block and abuts against the side wall of the first head.

Furthermore, the compressing part comprises a connecting part and a spring, one end of the connecting part penetrates through the first positioning block or the second positioning block, and the spring is arranged between the other end of the connecting part and the outer wall surface of the first positioning block or the second positioning block.

Furthermore, the end parts of the multiple groups of first positioning blocks and the second positioning blocks are connected with fixing plates, and the fixing plates are installed on the positioning bottom plate through bases.

Furthermore, the second positioning assembly comprises a support column and a positioning pin, the positioning pin is fixed at the upper end of the support column through a fixing piece, and the lower end of the support column is fixedly arranged on the positioning bottom plate.

Furthermore, the fixing piece is arranged to protrude out of the outer wall of the upright column, and one end of the fixing piece abuts against the inner wall surface of the second head.

Further, the inspection jig further comprises a pressing assembly, and the end portion of the pressing assembly is pressed on the surface of the connecting rod.

Furthermore, the compressing assembly comprises a fixed seat, a clamp body and a pressing rod, the fixed seat is installed on the positioning bottom plate, the clamp body is hinged to the top of the fixed seat, the pressing rod is connected with the clamp body, and the end part of the pressing rod is pressed on the surface of the connecting rod.

Furthermore, handles are arranged at two ends of the positioning bottom plate.

Compared with the prior art, the beneficial effects of the utility model are that:

the connecting rod three-coordinate inspection clamp can realize the clamping and positioning of a plurality of connecting rods by one-time clamping, is convenient for rapidly completing the full-size measurement of one set of connecting rods, and effectively improves the detection efficiency; the connecting rod can not be shielded in the measuring process, the full-size measurement of the connecting rod is not influenced, and the processing size and form and position tolerance detection required by a drawing can be met at one time.

Drawings

FIG. 1 is a perspective view of a connecting rod three-coordinate inspection fixture;

FIG. 2 is a top view of a connecting rod three-coordinate inspection fixture;

FIG. 3 is a front view of the connecting rod;

FIG. 4 is a side view of the connecting rod;

FIG. 5 is a front view of the first positioning assembly;

FIG. 6 is a top view of the first positioning assembly;

FIG. 7 is a top view of the second positioning assembly;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

FIG. 9 is a schematic view of the hold-down assembly;

in the drawings: 1-a connecting rod; 11-a first head; 12-a second head; 13-a first aperture; 14-a second well; 15-a shaft; 16-upper plane; 17-lower plane; 18-side; 2-positioning the bottom plate; 21-a handle; 3-a first positioning assembly; 31-a first positioning block; 32-a second locating block; 33-first step face; 34-a second step surface; 35-a compression member; 36-a fixed plate; 37-a base; 4-a second positioning assembly; 41-a pillar; 42-a positioning pin; 43-a fixture; 5-a pressing component; 51-a fixed seat; 52-a clip body; 53-pressure lever.

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.

Examples

Fig. 1 to 9 show an embodiment of a three-coordinate inspection jig for a connecting rod 1 according to the present invention, and fig. 3 and 4 show that two ends of the connecting rod 1 are respectively provided with a first head 11 and a second head 12, the first head 11 is provided with a first hole 13, and the second head 12 is provided with a second hole 14; as shown in fig. 1 and 2, the inspection jig includes a positioning base plate 2, and a plurality of sets of a first positioning component 3 and a second positioning component 4 fixedly mounted on the positioning base plate 2, the first positioning component 3 is provided with a first positioning plane and the first head 11 is positioned on the first positioning plane, the second positioning component 4 is provided with a second positioning plane and the second head 12 is positioned on the second positioning plane, and the first positioning plane and the second positioning plane are coplanar. In the embodiment, the diameter of the first hole 13 is larger than that of the second hole 14, the first hole 13 is nested with a crankshaft, the second hole 14 is nested with a piston pin, and the upper plane 16, the lower plane 17 and the side surface 18 of the connecting rod 1 are all machined surfaces; the upper plane 16 of the connecting rod 1 is horizontally positioned and clamped on the inspection clamp downwards.

In the embodiment, the positioning bottom plate 2 is installed on a workbench of a three-coordinate measuring device, the first positioning assembly 3 is used for positioning the first head 11 of the connecting rod 1, the second positioning assembly 4 is used for positioning the second head 12 of the connecting rod 1, and the multiple groups of first positioning assemblies 3 and second positioning assemblies 4 are arranged so that the clamping and positioning of the multiple connecting rods 1 can be realized in one clamping process, the full-size measurement of one set of connecting rods 1 can be quickly completed, and the detection efficiency is effectively improved; first locating component 3, second locating component 4 can not shelter from connecting rod 1 at the location in-process, do not influence the full size measurement of connecting rod 1, can once only satisfy the machining dimension and the form and position tolerance detection that the drawing required.

In one embodiment, the positioning base plate 2 is a flat plate with an upper plane 16 and a lower plane 17 parallel to each other, and a plurality of fixing holes are formed in the flat plate, and the positioning base plate 2 is fixed on a workbench of the three-coordinate measuring device. The positioning bottom plate 2 of the embodiment is made of 7075 aluminum alloy, and has high strength and good wear resistance.

In one embodiment, as shown in fig. 5 and 6, the first positioning assembly 3 includes a first positioning block 31 and a second positioning block 32, the first positioning block 31 and the second positioning block 32 are disposed opposite to each other, and the first head 11 is clamped between the first positioning block 31 and the second positioning block 32. Each group of positioning components comprises a first positioning block 31 and a second positioning block 32 which are oppositely arranged, a clamping position is formed between the first positioning block 31 and the second positioning block 32, and the first head 11 is clamped in the clamping position. For the first head 11 with a larger size, the first positioning block 31 and the second positioning block 32 are used for realizing positioning together, so that the positioning stability and accuracy of the first head 11 can be ensured.

In one embodiment, the first positioning block 31 is provided with a first step surface 33, the second positioning block 32 is provided with a second step surface 34, the first positioning block 31 or the second positioning block 32 is connected with a pressing member 35, and the pressing member 35 passes through the first positioning block 31 or the second positioning block 32 and abuts against the side wall of the first head portion 11. In the implementation of the present embodiment, the first header 11 is placed on the first step surface 33 and the second step surface 34, and a certain gap is left between the first step surface 33 and the first header 11 and between the second step surface 34 and the first header 11, so as to facilitate the quick mounting and dismounting of the first header 11; in addition, the horizontal planes of the first step surface 33 and the second step surface 34 jointly form a first positioning surface to position the upper surface of the connecting rod 1, and the side surface 18 of the connecting rod 1 is pressed and positioned by the pressing piece 35, so that the side surface 18 of the first head 11 is positioned.

In one embodiment, the pressing member 35 includes a connecting member and a spring, one end of the connecting member passes through the first positioning block 31 or the second positioning block 32, and the spring is disposed between the other end of the connecting member and the outer wall surface of the first positioning block 31 or the second positioning block 32. The pressing member 35 is a spring pressing screw, and when the spring in the extended state returns to the original position, a tensile force is generated at the other end of the connecting member, and a portion of the connecting member protruding from the first positioning block 31 or the second positioning block 32 extends to abut against the side surface 18 of the first head 11, thereby positioning the side surface 18 of the first head 11.

In one embodiment, the fixing plates 36 are connected to the ends of the sets of first positioning blocks 31 and second positioning blocks 32, and the fixing plates 36 are mounted on the positioning base plate 2 through the bases 37. The first positioning blocks 31 and the second positioning blocks 32 are provided in multiple sets, and if the multiple sets of the first positioning blocks 31 and the second positioning blocks 32 are connected to the positioning base plate 2, a large number of connecting positions or connecting holes need to be formed in the base plate, which is not beneficial to processing the positioning base plate 2. In this embodiment, the first positioning block 31 and the second positioning block 32 are mounted on the fixing plate 36 and then mounted on the base 37, so that the number of the connecting positions and the connecting holes formed on the positioning base plate 2 can be greatly reduced. In this embodiment, different fixing plates 36 and first positioning blocks 31 and second positioning blocks 32 on the fixing plates 36 can be selected and used according to different models of the connecting rod 1, and the fixing plates 36, the first positioning blocks 31 and the second positioning blocks 32 can also be used for fixing a component and the connecting rod 1 model information is engraved on the fixing plates 36 for convenient replacement.

In one embodiment, as shown in fig. 7 and 8, the second positioning assembly 4 includes a pillar 41 and a positioning pin 42, the positioning pin 42 is fixed to an upper end of the pillar 41 by a fixing member 43, and a lower end of the pillar 41 is fixed to the positioning base plate 2; the fixing member 43 is provided to protrude from the outer wall of the pillar, and one end of the fixing member 43 abuts against the inner wall surface of the second head portion 12. The upper end surface of the support 41 can be positioned by the upper plane 16 of the connecting rod 1, and the positioning pin 42 positions the second head 12 of the connecting rod 1 from the direction of the second hole 14. In this embodiment, can set up not unidimensional locating pin 42 according to the connecting rod 1 of different models, be carved with connecting rod 1 model information on the locating pin 42, the locating pin 42 of other models can be placed in neatly arranged's through-hole on the locating bottom plate 2, and the measurement personnel of being convenient for change the use to, but multiple connecting rod 1 sharing frock clamp reduces anchor clamps purchasing cost.

In one embodiment, the inspection jig further comprises a pressing assembly 5, and the end of the pressing assembly 5 is pressed on the surface of the connecting rod 1. The pressing component 5 presses the lower surface of the connecting rod 1, so that the upper surface, the lower surface and the side surface 18 of the connecting rod 1 are positioned, and a stable clamping effect is achieved.

In one embodiment, as shown in fig. 9, the pressing assembly 5 includes a fixing seat 51, a clamp 52 and a pressing rod 53, the fixing seat 51 is installed on the positioning base plate 2, the clamp 52 is hinged on the top of the fixing seat 51, the pressing rod 53 is connected with the clamp 52, and an end of the pressing rod 53 is pressed on the surface of the connecting rod 1. Wherein, fixing base 51 plays the supporting role, and the setting of clamp 52 is convenient for depression bar 53 to lift and put down, easy operation, and depression bar 53 crimping is in the lower surface of connecting rod 1, and the tip of depression bar 53 can adopt the nylon material in order to avoid pressing from both sides the wounded connecting rod 1 work piece. Specifically, the strut 53 may be crimped to the shaft 15, with the shaft 15 being connected between the first head 11 and the second head 12. In addition, the clamp 52 in this embodiment may be pressed against one set of shafts 15, or may be pressed against two sets of shafts 15 at the same time, and in this case, two sets of pressing heads are provided at the end of the pressing rod 53, and the two sets of pressing heads are symmetrical with respect to the center line of the clamp 52.

In one embodiment, the positioning base plate 2 is provided with handles 21 at both ends. The handles 21 can be arranged in two groups, and the two groups of handles 21 are symmetrically arranged on two sides of the central line of the positioning bottom plate 2, so that the carrying of the inspection clamp is convenient.

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. A connecting rod three-coordinate inspection clamp is characterized in that a first head part (11) and a second head part (12) are respectively arranged at two ends of a connecting rod (1), the first head part (11) is provided with a first hole (13), and the second head part (12) is provided with a second hole (14); the inspection fixture is characterized by comprising a positioning bottom plate (2) and a plurality of groups of first positioning assemblies (3) and second positioning assemblies (4) which are fixedly arranged on the positioning bottom plate (2), wherein the first positioning assemblies (3) are provided with first positioning planes, the first heads (11) are positioned on the first positioning planes, the second positioning assemblies (4) are provided with second positioning planes, the second heads (12) are positioned on the second positioning planes, and the first positioning planes and the second positioning planes are coplanar.

2. The connecting rod three-coordinate inspection fixture as claimed in claim 1, wherein the first positioning assembly (3) comprises a first positioning block (31) and a second positioning block (32), the first positioning block (31) and the second positioning block (32) are oppositely arranged, and the first head (11) is clamped between the first positioning block (31) and the second positioning block (32).

3. The connecting rod three-coordinate inspection fixture as claimed in claim 2, wherein the first positioning block (31) is provided with a first step surface (33), the second positioning block (32) is provided with a second step surface (34), the first positioning block (31) or the second positioning block (32) is connected with a pressing member (35), and the pressing member (35) passes through the first positioning block (31) or the second positioning block (32) and abuts against the side wall of the first head portion (11).

4. The connecting rod three-coordinate inspection fixture as claimed in claim 3, wherein the pressing member (35) comprises a connecting member and a spring, one end of the connecting member passes through the first positioning block (31) or the second positioning block (32), and the spring is arranged between the other end of the connecting member and the outer wall surface of the first positioning block (31) or the second positioning block (32).

5. The connecting rod three-coordinate inspection fixture as claimed in claim 2, wherein fixing plates (36) are connected to the ends of the plurality of sets of first positioning blocks (31) and second positioning blocks (32), and the fixing plates (36) are mounted on the positioning base plate (2) through bases (37).

6. The connecting rod three-coordinate inspection fixture as claimed in claim 1, wherein the second positioning assembly (4) comprises a support pillar (41) and a positioning pin (42), the positioning pin (42) is fixed at the upper end of the support pillar (41) through a fixing member (43), and the lower end of the support pillar (41) is fixedly arranged on the positioning base plate (2).

7. The connecting rod three-coordinate inspection jig according to claim 6, wherein the fixing member (43) is provided to protrude from an outer wall of the pillar, and one end of the fixing member (43) abuts against an inner wall surface of the second head portion (12).

8. Connecting rod three-coordinate inspection jig according to any one of claims 1 to 7, characterized in that the inspection jig further comprises a pressing assembly (5), the end of the pressing assembly (5) being pressed against the surface of the connecting rod (1).

9. The connecting rod three-coordinate inspection fixture as claimed in claim 8, wherein the pressing assembly (5) comprises a fixed seat (51), a clamp body (52) and a pressing rod (53), the fixed seat (51) is mounted on the positioning base plate (2), the clamp body (52) is hinged to the top of the fixed seat (51), the pressing rod (53) is connected with the clamp body (52), and the end of the pressing rod (53) is pressed on the surface of the connecting rod (1).

10. Connecting rod three-coordinate inspection jig according to claim 1, characterized in that the positioning base plate (2) is provided with handles (21) at both ends.