CN215832749U

CN215832749U - Ultrahigh precision positioning structure for piston detection

Info

Publication number: CN215832749U
Application number: CN202122188556.6U
Authority: CN
Inventors: 王亚辉
Original assignee: Shenzhen Mimi Automation Co ltd
Current assignee: Shenzhen Mimi Automation Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-15
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses an ultrahigh precision positioning structure for piston detection, wherein a through hole is formed in the middle of a piston, and two side edges of the piston are communicated oppositely through the through hole; the top end of the piston is provided with a blind hole which comprises a clamping device, a rotating device and a containing device; the clamping device is arranged on one side of the rotating device, and the clamping device and the rotating device are both arranged above the containing device; the clamping device is used for clamping the piston for positioning; the rotating device is used for rotationally positioning the piston; the containing device is used for containing the piston; the first clamp and the second clamp move oppositely through the sliding groove to clamp the piston and move reversely to release the piston; the piston is driven to reach the position below the tip key through the rotation of the turntable, and positioning is carried out; when the rotary table rotates, the piston and the rotary table are relatively static by means of friction force between the cushion block and the bottom surface of the piston, so that pistons with different diameters can be conveniently detected on the same machine, and the rotary table does not need to be adjusted when the diameter of the piston is changed.

Description

Ultrahigh precision positioning structure for piston detection

Technical Field

The utility model relates to the field of piston detection and positioning, in particular to an ultrahigh precision positioning structure for piston detection.

Background

The piston is a reciprocating part in the cylinder body of the automobile engine, the basic structure of the piston can be divided into a top part, a head part and a skirt part, the top part of the piston is the main part forming a combustion chamber, and the shape of the top part of the piston is related to the form of the selected combustion chamber.

In the process of machining the piston, firstly, a blank is machined in a milling machine, then the machined piston blank is machined on a machine tool, the piston needs to be detected after machining, the direction of a through hole in the piston is random, therefore, a positioning structure is needed to position the piston, but the existing positioning device is inaccurate in positioning and often causes misjudgment, and finally, manual positioning is needed, so that time and cost are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides an ultrahigh precision positioning structure for piston detection.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an ultra-high precision positioning structure for piston detection is characterized in that a through hole is formed in the middle of a piston, and two side edges of the piston are communicated oppositely through the through hole; the top end of the piston is provided with a blind hole which comprises a clamping device, a rotating device and a containing device; the clamping device is arranged on one side of the rotating device, and the clamping device and the rotating device are both arranged above the containing device; the clamping device is used for clamping the piston for positioning; the rotating device is used for rotationally positioning the piston; the containing device is used for containing the piston.

Preferably, the clamping device comprises a base, and a first clamp and a second clamp which are arranged on the base and correspond to each other in position; a sliding groove is formed in the base, and one end of each of the first clamp and the second clamp is arranged in the sliding groove; the first clamp and the second clamp are located on one side of the piston and are provided with clamping positions.

Preferably, the rotating device comprises a rotating cylinder, a tip key is arranged at the bottom of the rotating cylinder, a tip is arranged at one end, not connected with the rotating cylinder, of the chuck key, and the tip is located right above the piston.

Preferably, the containing device comprises a rotary disc, a plurality of cushion blocks with equal intervals are arranged on the rotary disc in a surrounding mode, the piston is arranged on the cushion blocks, and the cushion blocks are arranged between the first clamp and the second clamp; and a through groove is formed in the middle of the cushion block.

Preferably, the rotary cylinder can be replaced by other mechanical devices.

Preferably, the first clip and the second clip are both made of nylon material.

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

the utility model designs an ultrahigh precision positioning structure for piston detection, wherein a first clamp and a second clamp move oppositely through a chute to clamp a piston and move reversely to loosen the piston; the piston is driven to reach the position below the tip key through the rotation of the turntable, and positioning is carried out; when the turntable rotates, the piston and the turntable are relatively static by means of the friction force between the cushion block and the bottom surface of the piston, so that pistons with different diameters can be conveniently detected on the same machine, and the turntable does not need to be adjusted when the diameter of the piston is changed; the rotary cylinder moves downwards until the tip of the tip key is pressed on the piston, the rotary cylinder drives the tip key to rotate 180 degrees, the piston can be driven by the tip key to rotate until the piston is finally positioned in one direction, the operation is convenient and fast, and the piston can be positioned in an ultrahigh precision mode.

Drawings

FIG. 1 is a schematic structural diagram according to the present invention;

fig. 2 is a schematic structural diagram of a piston according to the present invention.

Illustration of the drawings:

1. a clamping device 2, a rotating device,

3. a containing device 11, a base seat,

12. the first clip, 13, the second clip,

14. a clamping position 21, a rotating cylinder,

22. a chuck key 31, a rotating disk,

32. the cushion block, 111, the sliding groove,

221. the clamping head 321 is connected with the through groove,

100. the piston, 101, the through hole,

102. and (4) blind holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 2, in an ultra-high precision positioning structure for piston detection, a through hole 101 is formed in the middle of a piston 100, and two side edges of the piston 100 are relatively communicated through the through hole 101; the top end of the piston 100 is provided with a blind hole 102 which comprises a clamping device 1, a rotating device 2 and a containing device 3; the clamping device 1 is arranged on one side of the rotating device 2, and the clamping device 1 and the rotating device 2 are both arranged above the containing device 3; the clamping device 1 is used for clamping the piston 100 for positioning; the rotating device 2 is used for rotationally positioning the piston 100; the containing device 3 is used for containing the piston 100.

The clamping device 1 comprises a base 11, a first clamp 12 and a second clamp 13 which are arranged on the base 11 and correspond to each other in position; a sliding groove 111 is formed in the base 11, and one ends of the first clamp 12 and the second clamp 13 are arranged in the sliding groove 111; the first clamp 12 and the second clamp 13 are provided with clamping positions 14 on one side of the piston 100; the first clamp 12 and the second clamp 13 clamp the piston 100 by moving towards each other through the slide groove 111, and release the piston 100 by moving in the opposite direction.

The rotating device 2 comprises a rotating cylinder 21, a pointed key 22 is arranged at the bottom of the rotating cylinder 21, a pointed head 221 is arranged at one end of the pointed key 22, which is not connected with the rotating cylinder 21, and the pointed head 221 is positioned right above the piston 100.

The containing device 3 comprises a rotating disc 31, a plurality of cushion blocks 32 with equal intervals are arranged on the rotating disc 31 in a surrounding manner, the piston 100 is arranged on the cushion blocks 32, and the cushion blocks 32 are arranged between the first clamp 12 and the second clamp 13; a through groove 321 is arranged in the middle of the cushion block 32; the piston 100 is driven to reach the lower part of the pointed key 22 by the rotation of the turntable 31 for positioning; when the rotary plate 31 rotates, the piston 100 and the rotary plate 31 are relatively stationary by means of the friction force between the pad 32 and the bottom surface of the piston 100, so that the pistons 100 with different diameters can be conveniently detected on the same machine without adjusting the rotary plate 31 when the diameter of the piston 100 is changed.

The rotary cylinder 21 can be replaced by other mechanical devices; the first clip 12 and the second clip 13 may be made of nylon.

The working principle of the utility model is as follows: when the piston 100 arrives at the turntable 31 from the previous station, the direction of the through hole 101 of the piston 100 is random, therefore, a positioning structure is needed to position the piston 100, when the piston 100 arrives below the pointed key 22, the first clamp 12 and the second clamp 13 move towards each other through the sliding groove 111 on the base 11 and clamp the piston 100 with small force, the center of the piston 100 is positioned, but the piston 100 can rotate; then, the rotating cylinder 21 moves downwards until the tip 221 of the tip key 22 presses on the piston 100, the pressure is guaranteed to be 50 grams to 80 grams, the piston 100 cannot be crushed, then the rotating cylinder 21 drives the tip key 22 to rotate 180 degrees, the piston 100 is driven to rotate by the tip key 22 until the piston is finally positioned in one direction, then the first clamp 12 and the second clamp 13 move towards two sides, the rotating cylinder 21 moves upwards, the tip key 22 moves upwards along with the rotating cylinder 21, the rotary disc 31 rotates, the next piston 100 reaches below the tip key 22, and the next piston 100 is positioned; the method is convenient and fast, and can perform ultra-high precision positioning on the piston 100.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. An ultra-high precision positioning structure for piston detection is characterized in that a through hole is formed in the middle of a piston, and two side edges of the piston are communicated oppositely through the through hole; the top end of the piston is provided with a blind hole and is characterized by comprising a clamping device, a rotating device and a containing device; the clamping device is arranged on one side of the rotating device, and the clamping device and the rotating device are both arranged above the containing device; the clamping device is used for clamping the piston for positioning; the rotating device is used for rotationally positioning the piston; the containing device is used for containing the piston.

2. The ultra-high precision positioning structure for piston detection as claimed in claim 1, wherein the clamping device comprises a base and a first clamp and a second clamp which are arranged on the base at corresponding positions; a sliding groove is formed in the base, and one end of each of the first clamp and the second clamp is arranged in the sliding groove; the first clamp and the second clamp are located on one side of the piston and are provided with clamping positions.

3. The ultra-high precision positioning structure for piston detection as claimed in claim 1, wherein the rotating device comprises a rotating cylinder, a pointed key is arranged at the bottom of the rotating cylinder, a pointed end is arranged at one end of the chuck key, which is not connected with the rotating cylinder, and the pointed end is positioned right above the piston.

4. The ultra-high precision positioning structure for piston detection as claimed in claim 2, wherein the holding device comprises a turntable, a plurality of equally spaced pads are arranged on the turntable in a surrounding manner, the piston is arranged on the pads, and the pads are arranged between the first clamp and the second clamp; and a through groove is formed in the middle of the cushion block.

5. The ultra-high precision positioning structure for piston detection as claimed in claim 3, wherein the rotary cylinder can be replaced by other mechanical devices.

6. The ultra-high precision positioning structure for piston detection as claimed in claim 1, wherein the first clip and the second clip are made of nylon material.