CN211728414U

CN211728414U - Alignment device

Info

Publication number: CN211728414U
Application number: CN201921699047.6U
Authority: CN
Inventors: 张文平; 赵会静; 江浩
Original assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Current assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-10-23
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses an alignment device, rise cover, aperture including the macropore and rise cover, pull rod cap an, pull rod cap b, pull rod a, pull rod b, cylinder a, cylinder b, cylinder c, mount pad, install pull rod a's rear end cylinder a's output, install pull rod a's front end the macropore cover that rises, install in the macropore cover that rises pull rod cap a, install pull rod b's rear end cylinder b's output, install pull rod b's front end the aperture cover that rises, install in the aperture cover that rises pull rod cap b, cylinder a and cylinder b install on the mount pad, install the side of mount pad through the sliding seat on the slide bar, install the rear end of slide bar cylinder c. The action of manual putting in and taking out is omitted, unnecessary operation of operators is reduced, and meanwhile, the production beat is improved. And an expansion sleeve positioning mode is adopted, so that the size change caused by sliding friction is eliminated, and the repeated positioning precision is improved.

Description

Alignment device

Technical Field

The utility model relates to a connecting rod bore hole special plane field, concretely relates to aligning device.

Background

The connecting rod is mainly composed of three parts, wherein the part connected with the piston pin is called a connecting rod small end, the part connected with the crankshaft is called a connecting rod large end, and the rod part connected with the small end and the large end is called a connecting rod body.

Connecting rods are used as main connecting parts in the industrial field, and the market has higher and higher requirements on the precision and the production rhythm of the connecting rods. The traditional processing adopts a processing center mode, an operator needs to position the connecting rod manually, when an inner hole of the large/small end of the connecting rod is finely bored, a dummy pin with the same diameter as the inner hole needs to be made to serve as a positioning pin, and after the connecting rod is positioned and clamped, the dummy pin is pulled out for processing. The processing of each connecting rod needs manual work to accomplish, and production efficiency is low, and the operation content is numerous and diverse, and the long-term use of "dummy pin" can wear and tear in addition and influence connecting rod positioning accuracy. Two actions of putting in and taking out are needed by adopting the 'dummy pin' positioning, and the machining efficiency is influenced while the actions are wasted. Repeated putting in and taking out causes sliding friction between the connecting rod and the dummy pin, which causes the outer diameter of the dummy pin to become smaller, causes the positioning clearance to become larger and larger, and causes the positioning deviation, thereby affecting the processing precision.

In order to improve the positioning precision and the production efficiency, the positioning mode of the connecting rod needs to be simplified, and a novel connecting rod alignment device is designed at present, so that automatic and quick alignment can be realized, and the positioning error caused by the abrasion of the positioning pin is eliminated.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings or drawbacks of the prior art, it is desirable to provide an alignment device that is more economical and efficient in positioning while avoiding relative friction, and a need exists for an alignment device that replaces the "dummy pin" positioning.

According to the technical scheme that the embodiment of this application provides, an alignment device, rise cover, aperture including the macropore and rise cover, pull rod cap a, pull rod cap b, pull rod a, pull rod b, cylinder a, cylinder b, cylinder c, mount pad and slide bar, pull rod a's rear end is installed cylinder a's output, pull rod a's front end is installed the macropore rises the cover, install in the macropore rises the cover pull rod cap a, pull rod b's rear end is installed cylinder b's output, pull rod b's front end is installed the aperture rises the cover, install in the aperture rises the cover pull rod cap b, cylinder a and cylinder b install on the mount pad, the side of mount pad is installed through the sliding seat on the slide bar, install the rear end of slide bar cylinder c.

The utility model discloses in, the macropore cover that rises is circular cover that rises.

The utility model discloses in, the aperture cover that rises is the rhombus cover that rises.

The utility model discloses in, the material that the cover and the aperture cover that rise are risen to the macropore is 65Mn instrument steel.

The utility model discloses in, the diameter that the cover and the aperture that rise of macropore rise overlaps is less than 3mm, unilateral clearance 15mm than the main aspects and the tip diameter of connecting rod respectively.

To sum up, the beneficial effect of this application: the action of manual putting in and taking out is omitted, unnecessary operation of operators is reduced, and meanwhile, the production beat is improved. And an expansion sleeve positioning mode is adopted, so that the size change caused by sliding friction is eliminated, and the repeated positioning precision is improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a right side view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is an enlarged view of A-A of the present invention;

FIG. 5 is a perspective view of the medium and large hole expanding sleeve of the present invention;

fig. 6 is a perspective view of the small hole expanding sleeve of the present invention.

Reference numbers in the figures: 4.1 of a large-hole expansion sleeve; small hole expansion sleeve-4.2; a pull rod cap a-4.3; 4.4 parts of a pull rod cap; 4.5 of a pull rod a; 4.6 of a pull rod b; cylinder a-4.7; cylinder b-4.8; cylinder c-4.9; mounting seat-4.10; slide bar-4.11.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1, 2, 3 and 4, an alignment apparatus includes a large-hole expansion sleeve 4.1, a small-hole expansion sleeve 4.2, a pull rod cap a4.3, a pull rod cap b4.6, a pull rod a4.5, a pull rod b4.6, a cylinder a4.7, a cylinder b4.8, a cylinder c4.9, a mounting seat 4.10 and a slide rod 4.11, wherein the rear end of the pull rod a4.5 is mounted at the output end of the cylinder a4.7, the front end of the pull rod a4.5 is mounted with the large-hole expansion sleeve 4.1, the large-hole expansion sleeve 4.1 is mounted with the pull rod cap a4.3, the rear end of the pull rod b4.6 is mounted at the output end of the cylinder b4.8, the front end of the pull rod b4.6 is mounted with the small-hole expansion sleeve 4.2, the small-hole expansion sleeve 4.2 is mounted with the pull rod cap b4.6, the cylinder a4.7 and the cylinder 4.8 are mounted on the mounting seat 4.10, and the side surface of the slide rod 4.11 is mounted with the expansion sleeve 4.11. The large-hole expansion sleeve 4.1 is a circular expansion sleeve. The small hole expansion sleeve 4.2 is a diamond expansion sleeve. The material of the large-hole expansion sleeve 4.1 and the small-hole expansion sleeve 4.2 is 65Mn tool steel. The diameters of the large-hole expansion sleeve 4.1 and the small-hole expansion sleeve 4.2 are respectively 0.3mm smaller than the diameters of the large end and the small end of the connecting rod, and the unilateral clearance is 0.15 mm.

Example (b):

1. the device adopts the expansion sleeve for positioning and alignment, and the big hole and the small hole are independently controlled. The large hole is used for main positioning, the circular expansion sleeve is adopted, the small hole is used for secondary positioning, and the diamond expansion sleeve is adopted. When the connecting rod is tensioned, the large holes are tensioned firstly, and the small holes are tensioned later, so that the error of the center distance between the large holes and the small holes generated during the rough machining of the connecting rod can be eliminated.

2. The expansion sleeve is expanded by an air cylinder, the expansion sleeve is made of 65Mn tool steel, and has certain flexibility and plasticity after heat treatment, so that the expansion sleeve can be ensured to be continuously expanded and contracted, and the service life requirement of the expansion sleeve is met. The diameter D1/D2 of the expansion sleeve in the natural state is 0.3mm smaller than that of D1/D2 before the connecting rod is machined, and the single-side gap is 0.15mm, so that the connecting rod can be more easily installed, and the sliding friction generated during contact is reduced.

3. After the connecting rod is installed, the outer circle of the expansion sleeve is continuously expanded by the force of the pull-back of a cylinder rod (cylinder A/B) and finally contacts with the connecting rod, so that the inner hole of the connecting rod is expanded, and accurate positioning is realized.

4. After the connecting rod is tensioned and positioned, the clamp clamps the workpiece, the cylinder (cylinder A/B) extends out, the expansion sleeve is loosened, the diameter of the outer circle reaches the natural state, and the clearance between the outer circle and the single side of the inner hole of the connecting rod is restored to 0.15mm again. The alignment mechanism is integrally drawn out by the cylinder C. The equipment begins processing.

The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the present invention is not limited to the specific combinations of the above-described technical features, and other technical features that are arbitrarily combined with each other or equivalent features may be included without departing from the scope of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The utility model provides an aligning device, includes that macropore rises cover (4.1), aperture rise cover (4.2), pull rod cap a (4.3), pull rod cap b (4.6), pull rod a (4.5), pull rod b (4.6), cylinder a (4.7), cylinder b (4.8), cylinder c (4.9), mount pad (4.10) and slide bar (4.11), characterized by: the rear end of pull rod a (4.5) is installed the output of cylinder a (4.7), install the front end of pull rod a (4.5) the macropore cover (4.1) that rises, install in macropore cover (4.1) that rises pull rod cap a (4.3), install the rear end of pull rod b (4.6) the output of cylinder b (4.8), install the front end of pull rod b (4.6) the aperture cover (4.2) that rises, install in the aperture cover (4.2) that rises pull rod cap b (4.6), install cylinder a (4.7) and cylinder b (4.8) on mount pad (4.10), install the side of mount pad (4.10) through the sliding seat on slide rod (4.11), install the rear end of slide rod (4.11) cylinder c (4.9).

2. An alignment device as defined in claim 1, wherein: the large-hole expansion sleeve (4.1) is a circular expansion sleeve.

3. An alignment device as defined in claim 1, wherein: the small hole expansion sleeve (4.2) is a diamond expansion sleeve.

4. An alignment device as defined in claim 1, wherein: the large-hole expansion sleeve (4.1) and the small-hole expansion sleeve (4.2) are made of 65Mn tool steel.

5. An alignment device as defined in claim 1, wherein: the diameters of the large-hole expansion sleeve (4.1) and the small-hole expansion sleeve (4.2) are respectively 0.3mm smaller than the diameters of the large end and the small end of the connecting rod, and the unilateral clearance is 0.15 mm.