CN213301072U

CN213301072U - Precision detecting instrument for roundness of cylinder piston

Info

Publication number: CN213301072U
Application number: CN202022779731.4U
Authority: CN
Inventors: 陈小元
Original assignee: Chongqing Cuibo Automobile Technology Consulting Service Co ltd
Current assignee: Chongqing Cuibo Automobile Technology Consulting Service Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-05-28
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses an air cylinder piston roundness precision detection instrument, which comprises a base, the top of base is fixedly connected with riser and frame, the outer wall of riser rotates and runs through and is provided with a round pipe, the one end of round pipe is fixedly connected with three-jaw chuck, the outer wall of frame is fixedly connected with slide bar, the outer wall of slide bar slides and is cup jointed with a sliding table, the outer wall of sliding table is provided with a lifting mechanism, the top of lifting mechanism is provided with a flat plate, one end of the top of flat plate is fixedly provided with a rotating shaft, the outer wall of rotating shaft rotates and is connected with a movable rod, one end of the movable rod is fixedly connected with a; the utility model discloses a set up lead screw, second motor, start the second motor and drive the lead screw and rotate, the screw-thread fit of usable lead screw and slip table and the guide effect of slide bar to the slip table, the drive slip table removes to change the position of feeler lever on the piston surface, thereby need not to carry out the circularity detection to the different positions on piston surface by the centre gripping piston again.

Description

Precision detecting instrument for roundness of cylinder piston

Technical Field

The utility model relates to a piston check out test set specifically is cylinder piston circularity precision measurement instrument.

Background

The cylinder is a pneumatic actuating element for converting pressure energy of compressed gas into mechanical energy in pneumatic transmission, and the cylinder has two types of reciprocating linear motion and reciprocating swing. The cylinder doing reciprocating linear motion can be divided into 4 types of single-acting cylinder, double-acting cylinder, diaphragm type cylinder and impact cylinder, the cylinder is composed of cylinder barrel, end cover, piston rod and sealing element, the piston is a pressure-bearing part in the cylinder. In order to prevent the left cavity and the right cavity of the piston from air channeling mutually, a piston sealing ring is arranged. The wear-resisting ring on the piston can improve the guidance quality of the cylinder, reduce the abrasion of the piston sealing ring and reduce the frictional resistance. The wear-resistant ring is made of polyurethane, polytetrafluoroethylene, cloth-sandwiched synthetic resin and the like. The width of the piston is determined by the size of the seal and the necessary sliding portion length. The sliding part is too short, which easily causes early wear and seizure. The piston is made of aluminum alloy and cast iron, and the piston of the small cylinder is made of brass.

In the production process of the cylinder, the roundness of the piston needs to be detected, so that the quality of the cylinder is guaranteed. For example, document CN205580357U provides a measuring tool for rapidly detecting ovality of a 40 ° position of an engine piston, which includes a supporting seat, on which a turntable is disposed; the turntable can rotate relative to the supporting seat; the rotary table is connected with a workbench; the supporting seat is provided with a threaded column; the threaded column is positioned on the side edge of the turntable; the threaded column is connected with a height adjusting block; the height adjusting block can be adjusted up and down relative to the supporting seat; the height adjusting block is connected with a connecting rod; two ends of the connecting rod are respectively provided with a left connecting arm and a right connecting arm; the left connecting arm and the right connecting arm are positioned on two sides of the workbench; the left connecting arm is connected with a dial indicator; and the right connecting arm is connected with a thimble. However, most of the existing cylinder piston roundness detection devices are complex in structure, inconvenient to operate and not intuitive in detection result and need to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cylinder piston circularity precision measurement instrument to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: cylinder piston circularity precision measuring instrument, the on-line screen storage device comprises a base, the top fixedly connected with riser and the frame of base, the outer wall of riser rotates and runs through and is provided with the pipe, the one end fixedly connected with three-jaw chuck of pipe, the outer wall fixedly connected with slide bar of frame, the outer wall of slide bar slides and has cup jointed the slip table, the outer wall of slip table is provided with elevating system, elevating system's top is provided with the flat board, the fixed pivot that is provided with of dull and stereotyped top one end department, the outer wall of pivot rotates and is connected with the movable rod, the one end fixedly connected with balancing weight of movable rod, the bottom fixedly connected with feeler lever of balancing weight, the feeler lever is located directly over the axial lead of three-jaw chuck, the other end fixedly connected with laser-beam lamp of movable rod.

As a further aspect of the present invention: the outer wall of pipe is fixed to be cup jointed first band pulley, the first motor of top fixedly connected with of base, the axle extension fixedly connected with second band pulley of first motor, first band pulley passes through belt transmission with the second band pulley and is connected.

As a further aspect of the present invention: the outer wall fixedly connected with second motor of frame, fixedly connected with lead screw behind the one side outer wall that the axle of second motor stretched the end and run through the frame, the tip of lead screw is connected with the outer wall rotation of frame, the lead screw runs through the slip table, the lead screw passes through screw-thread fit with the slip table and is connected.

As a further aspect of the present invention: elevating system includes the L template, the lateral wall of L template and the lateral wall fixed connection of slip table, the top of L template is run through and is provided with the nut, the inner wall threaded connection of nut has the screw rod, the top of screw rod is rotated with dull and stereotyped bottom and is connected, the bottom fixedly connected with hand wheel of screw rod, dull and stereotyped bottom and two guide bars of the symmetry fixedly connected with of department of correspondence of L template, the top of L template is run through to the bottom of guide bar.

As a further aspect of the present invention: the bottom fixedly connected with stopper of L template, the length of guide bar is less than the length of screw rod.

As a further aspect of the present invention: the scale plate is arc-shaped, and the axis of the scale plate is collinear with the axis of the rotating shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of simple structure and convenient operation, through setting up the pivot, the movable rod, the balancing weight, the feeler lever, laser spot lamp, scale plate etc. with the outer wall laminating back of the bottom of feeler lever and piston, the piston rotates, the outer wall surface of piston will be hugged closely all the time to the bottom of feeler lever under the effect of balancing weight, if there is arch or sunken etc. in the surface of piston can directly make the movable rod take place to rotate at the pivot outer wall, thereby make the laser spot lamp throw the light spot on the scale plate surface and deviate, through observing the offset of light spot on the scale plate surface, can audio-visual understanding the circularity change of piston, excellent in use effect; the utility model discloses a set up lead screw, second motor, start the second motor and drive the lead screw and rotate, can utilize the screw-thread fit of lead screw and slip table and the guide effect of slide bar to the slip table, drive the slip table and move to change the position of feeler lever on the piston surface, thereby need not to grasp the piston again and can carry out roundness detection to different positions on the piston surface; the utility model discloses a set up nut, screw rod, guide bar etc. and utilize the hand wheel to rotate the screw rod, can make the flat board reciprocate under the limiting displacement of guide bar to when examining the piston of different diameters, can make the initial position of movable rod remain same angle throughout, thereby make the light spot that the laser spot light throws align the scale original point on scale plate surface, so that survey.

Drawings

Fig. 1 is a schematic structural diagram of a precision roundness detection instrument for a cylinder piston.

Fig. 2 is a schematic structural view of a rotating shaft in the precision roundness detection instrument for a cylinder piston.

Fig. 3 is a schematic structural view of a guide rod in the precision roundness detection instrument for a cylinder piston.

The laser spot lamp comprises a base 1, a vertical plate 2, a circular tube 3, a three-jaw chuck 4, a first belt wheel 5, a first motor 6, a second belt wheel 7, a rack 8, a sliding rod 9, a sliding table 10, a lead screw 11, a second motor 12, an L-shaped plate 13, a nut 14, a screw rod 15, a hand wheel 16, a flat plate 17, a guide rod 18, a limiting block 19, a rotating shaft 20, a movable rod 21, a balancing weight 22, a touch rod 23, a laser spot lamp 24 and a scale plate 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, an air cylinder piston roundness precision detecting instrument includes a base 1, a vertical plate 2 and a frame 8 are fixedly connected to the top of the base 1, a circular tube 3 is rotatably disposed on the outer wall of the vertical plate 2, a three-jaw chuck 4 is fixedly connected to one end of the circular tube 3, a sliding rod 9 is fixedly connected to the outer wall of the frame 8, a sliding table 10 is slidably sleeved on the outer wall of the sliding rod 9, a lifting mechanism is disposed on the outer wall of the sliding table 10, a flat plate 17 is disposed on the top of the lifting mechanism, a rotating shaft 20 is fixedly disposed at one end of the top of the flat plate 17, a movable rod 21 is rotatably connected to the outer wall of the rotating shaft 20, a counter weight 22 is fixedly connected to one end of the movable rod 21, a contact rod 23 is fixedly connected to the bottom of the counter, the other end fixedly connected with laser shot-light 24 of movable rod 21, the top other end fixedly connected with scale plate 25 of dull and stereotyped 17.

The outer wall of pipe 3 is fixed to be cup jointed first band pulley 5, the top fixedly connected with first motor 6 of base 1, the axle that first motor 6 stretches end fixedly connected with second band pulley 7, first band pulley 5 passes through belt transmission with second band pulley 7 and is connected.

The outer wall fixedly connected with second motor 12 of frame 8, fixedly connected with lead screw 11 behind the one side outer wall that the end runs through frame 8 is stretched to the axle of second motor 12, the tip of lead screw 11 is connected with the outer wall rotation of frame 8, lead screw 11 runs through slip table 10, lead screw 11 passes through screw-thread fit with slip table 10 and is connected.

Elevating system includes L template 13, the lateral wall fixed connection of L template 13's lateral wall and slip table 10, L template 13's top is run through and is provided with nut 14, the inner wall threaded connection of nut 14 has screw rod 15, the top of screw rod 15 is rotated with dull and stereotyped 17's bottom and is connected, screw rod 15's bottom fixedly connected with hand wheel 16, dull and stereotyped 17's bottom and two guide bars 18 of the symmetrical fixedly connected with of department of correspondence of L template 13, the top of L template 13 is run through to the bottom of guide bar 18.

The bottom end of the L-shaped plate 13 is fixedly connected with a limiting block 19, and the length of the guide rod 18 is smaller than that of the screw rod 15.

The scale plate 25 is arc-shaped, and the axis of the scale plate 25 is collinear with the axis of the rotating shaft 20.

During the use, connect piston and piston rod earlier, later will utilize three-jaw chuck 4 to fix the centre gripping to the piston rod, then support the bottom of feeler lever 23 on the outer wall surface of piston, restart first motor 6 and laser spot lamp 24, first motor 6 is connected through the transmission of first band pulley 5 with second band pulley 7, make three-jaw chuck 4 drive piston slow rotation, the bottom of feeler lever 23 will hug closely the outer wall surface of piston all the time under the effect of balancing weight 22, if there is arch or sunken etc. in the surface of piston can directly make movable rod 21 take place to rotate at the 20 outer walls of pivot, thereby make laser spot lamp 24 throw the light spot on scale plate 25 surface and take place to squint, through observing the offset of light spot on scale plate 25 surface, can audio-visually understand the circularity change of piston.

Through setting up lead screw 11, second motor 12, start second motor 12 and drive lead screw 11 and rotate, the screw-thread fit of usable lead screw 11 and slip table 10 and the guide effect of slide bar 9 to slip table 10 drive slip table 10 and remove to change feeler lever 23 in the position on piston surface, thereby need not to centre gripping piston again and can carry out the circularity detection to the different positions on piston surface.

The utility model discloses a set up nut 14, screw rod 15, guide bar 18 etc. utilize hand wheel 16 to rotate screw rod 15, can make dull and stereotyped 17 reciprocate under the limiting displacement of guide bar 18 to when examining the piston of different diameters time measuring, can make the initial position of movable rod 21 remain same angle throughout, thereby make the light spot that 24 laser spot lamps throws align the scale original point on scale plate 25 surfaces, so that survey.

Claims

1. Cylinder piston circularity precision measurement instrument, including base (1), its characterized in that: the top fixedly connected with riser (2) and frame (8) of base (1), the outer wall of riser (2) rotates and runs through and is provided with pipe (3), the one end fixedly connected with three-jaw chuck (4) of pipe (3), the outer wall fixedly connected with slide bar (9) of frame (8), slip table (10) has been cup jointed in the outer wall slip of slide bar (9), the outer wall of slip table (10) is provided with elevating system, elevating system's top is provided with flat board (17), the top one end department of flat board (17) is fixedly provided with pivot (20), the outer wall rotation of pivot (20) is connected with movable rod (21), the one end fixedly connected with balancing weight (22) of movable rod (21), the bottom fixedly connected with feeler lever (23) of balancing weight (22), feeler lever (23) are located directly over the axial lead of three-jaw chuck (4), the other end fixedly connected with laser shot-light (24) of movable rod (21), the top other end fixedly connected with scale plate (25) of dull and stereotyped (17).

2. The precision roundness detection instrument for the cylinder piston according to claim 1, wherein: the outer wall of pipe (3) is fixed to be cup jointed first band pulley (5), the top fixedly connected with first motor (6) of base (1), the axle that stretches end fixedly connected with second band pulley (7) of first motor (6), first band pulley (5) are connected through belt transmission with second band pulley (7).

3. The precision roundness detection instrument for the cylinder piston according to claim 1, wherein: the outer wall fixedly connected with second motor (12) of frame (8), fixedly connected with lead screw (11) behind the one side outer wall that the end runs through frame (8) is stretched to the axle of second motor (12), the tip of lead screw (11) is connected with the outer wall rotation of frame (8), lead screw (11) run through slip table (10), lead screw (11) are connected through screw-thread fit with slip table (10).

4. The precision roundness detection instrument for the cylinder piston according to claim 1, wherein: elevating system includes L template (13), the lateral wall fixed connection of the lateral wall of L template (13) and slip table (10), the top of L template (13) is run through and is provided with nut (14), the inner wall threaded connection of nut (14) has screw rod (15), the top of screw rod (15) is rotated with the bottom of dull and stereotyped (17) and is connected, the bottom fixedly connected with hand wheel (16) of screw rod (15), the bottom of dull and stereotyped (17) and two guide bars (18) of symmetry fixedly connected with of department of correspondence of L template (13), the top of L template (13) is run through to the bottom of guide bar (18).

5. The precision roundness detection instrument for the cylinder piston according to claim 4, wherein: the bottom end of the L-shaped plate (13) is fixedly connected with a limiting block (19), and the length of the guide rod (18) is smaller than that of the screw rod (15).

6. The precision roundness detection instrument for the cylinder piston according to claim 1, wherein: the scale plate (25) is arc-shaped, and the axis of the scale plate (25) is collinear with the axis of the rotating shaft (20).