CN217878621U

CN217878621U - Upper positioning height adjustable clamping device and hardness online detection system

Info

Publication number: CN217878621U
Application number: CN202221907238.9U
Authority: CN
Inventors: 王敬涛; 吴春安; 孙积光; 孙磊; 张振民; 石晓生; 张健
Original assignee: Laizhou Huayin Testing Instrument Co ltd
Current assignee: Laizhou Huayin Testing Instrument Co ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-11-22
Anticipated expiration: 2032-07-21

Abstract

The utility model discloses an upper positioning height adjustable clamping device and a hardness online test system, which comprises an upper positioning mechanism, a lifting clamping mechanism and a height adjusting mechanism; the upper positioning mechanism is a portal frame structure arranged on a base on one side of the main beam, and the clamping beam is arranged at the top of the portal frame structure and stretches over the workbench and the supporting piece; the clamping cross beams can be one or two or more according to the requirements of the tested part, and the plurality of clamping cross beams are arranged in parallel; each clamping beam is provided with a height adjusting mechanism. The utility model discloses a hardness test of test part tip, middle part, afterbody just can be accomplished to a clamping, adopts the positioning clip to press from both sides the test part, makes milling cutter, hardness head, indentation measuring device relative test part become a fixed position, has reduced the complexity of equipment, makes hardness test reliable and stable, accurate, easy operation, and cost reduction, efficiency improves.

Description

Upper positioning height adjustable clamping device and hardness online detection system

Technical Field

The utility model relates to a sclerometer technical field specifically is a go up adjustable clamping device of location height and hardness on-line measuring system.

Background

When testing the hardness of parts, the conventional method is as follows: in order to test the real hardness value of the part, the oxide skin and the like of the test surface need to be removed, so that the surface quality of the tested surface meets the requirement of the hardness test. For the brinell hardness test, the test surface is required to be a plane, and the work is usually performed before the hardness test and after the work is completed on other machining equipment, the test surface is put into a hardness tester to perform the hardness test. The hardness test requires that the test force is perpendicular to the test plane, so that secondary clamping is not easy to achieve, and errors are easily caused. For the hardness test which requires a large scale, the conventional method for testing the hardness of the part is low in efficiency, and the test result is not accurate.

In order to improve efficiency, improve test accuracy, and meet product quality requirements, online/field hardness testing becomes a key to solving such problems. Therefore, hardmeters are required to be designed for different test parts, and milling or grinding, test force application, hardness value measurement and the like of the test parts are completed by one-time clamping.

The existing hardness detection clamping structure mainly adopts the technical scheme that a workbench capable of meeting the size range of a tested part is arranged, two oil cylinders with the same initial height and the same stroke are arranged below the workbench, a plurality of supporting pieces with the same height are arranged above the workbench, when the part reaches the horizontal position of hardness, the two oil cylinders ascend simultaneously to clamp the tested part on a main cross beam of a hardness tester, or the two oil cylinders ascend/descend simultaneously to finish the whole stroke of the oil cylinders, and the main cross beam of the hardness tester moves downwards to finish clamping, so that the clamping of the tested part is finished, and the milling or grinding, the application of test force, the measurement of hardness and the like of the tested part are finished by one-time clamping.

The main disadvantages of this structure: firstly, two oil cylinders rise or fall simultaneously, and the motion process needs accurate electronic control technology, very easily causes desynchrony, especially when the production field uses, very easily receives on-the-spot electromagnetic interference, causes synchronous failure. Secondly, the final clamping is performed between a main beam of the hardness tester and a plurality of supporting pieces arranged on the workbench, and because the main beam is internally provided with a milling or grinding mechanism, a test force applying mechanism, a hardness value measuring mechanism and the like, the width of the general main beam is larger, so that the measurement of smaller parts is limited, and particularly the hardness test can not be performed on the end parts of the parts; meanwhile, the mechanisms are arranged inside the cross beam, so that equipment is difficult to maintain.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can overcome above-mentioned not enough last location height-adjustable clamping device and hardness on-line measuring system is provided, it can accomplish the hardness test of test part tip, middle part, afterbody through a clamping, adopt the location to press from both sides tight test part, make milling cutter, hardness head, indentation measuring device relative test part become a fixed position, the complexity of equipment has been reduced, make the hardness test reliable and stable, accurate, and easy operation, cost reduction, efficiency improves.

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

the upper positioning height-adjustable clamping device comprises an upper positioning mechanism, a lifting clamping mechanism and a height adjusting mechanism;

the upper positioning mechanism is a portal frame structure arranged on a base on one side of the main beam, and the clamping beam is arranged at the top of the portal frame structure and stretches over the workbench and the supporting piece; the clamping cross beams can be one or two or more according to the requirements of the tested part, and the plurality of clamping cross beams are arranged in parallel; each clamping cross beam is provided with a height adjusting mechanism;

a lifting clamping oil cylinder in the lifting clamping mechanism is offset under the center of the workbench and is fixedly connected with the workbench through a piston rod; the guide bent plate is connected with the workbench and the support piece together to form a rigid support, and the whole rigid support is lifted and guided by a precise guide mechanism which is connected and arranged between the guide bent plate and the oil cylinder base.

A clamping cross beam in the height adjusting mechanism is matched with a T-shaped groove on a movable wedge block in a hoisting way through a pair of T-shaped nuts at the lower ends of a pair of locking screws; the top inclined plane of the movable wedge block is matched with the inclined plane in the middle of the bottom of the clamping beam, and the bottom of the movable wedge block is provided with a positioning reference plane; the horizontal screw-thread fit has accurate lead screw on the removal voussoir, and the adjustment end of accurate lead screw passes the-.

The portal frame structure is a lateral portal frame consisting of a base, a rigid upright post and an upright post cross beam; the two lateral portal frames are respectively positioned at two sides of the workbench and form a positive portal frame together with the rigid connecting shaft and the clamping beam; the forward portal frame is positioned above the lateral portal frame; the clamping cross beams are connected and arranged in the length direction of the upright post cross beam through rigid connecting shafts in corresponding quantity.

The clamping beam is crossed and vertical to the length direction of the workbench.

A plurality of supporting pieces with the same height are arranged on the workbench in parallel along the length direction.

And a flat-bottom V-shaped groove for placing a test part is arranged at the upper part of the support member.

The lifting clamping oil cylinder is arranged in the middle of the oil cylinder base, the oil cylinder base is fixed on the base, and a flat-bottom V-shaped opening is formed in the upper portion of the oil cylinder base.

The bottom of the workbench is fixedly connected with a pair of guide bent plates symmetrically arranged on two sides of the oil cylinder base.

The precise guide mechanism is a plurality of pairs of linear guide rail pairs, and the pairs of linear guide rail pairs are symmetrically arranged at the left side and the right side of the oil cylinder base.

The hardness on-line detection system comprises any one of the upper positioning height-adjustable clamping devices, a pair of main beam mounting seats arranged on the base and positioned on one side of the upper positioning height-adjustable clamping devices, a main beam fixedly connected on the pair of main beam mounting seats, a sliding plate connected with the main beam through a horizontal linear guide rail pair, a milling head or a grinding head, a hardness head and an indentation measuring mechanism which are arranged on the sliding plate, wherein the sliding plate is connected with a motor through a ball screw.

Compared with the prior art, the utility model, have following advantage and positive effect:

1. the device can complete the hardness test of any position of the test part, such as the end part, the middle part and the tail part.

2. Because the positioning and clamping are adopted on the test piece, the milling cutter, the hardness head and the indentation measuring device are fixed in position relative to the test part, the complexity of the device is reduced, and the hardness test is stable, reliable and accurate.

3. The workbench is provided with a precise guide mechanism, and a lifting clamping oil cylinder can stably support a tested part, so that the overturning moment caused by the fact that the gravity center of the tested part is not positioned at the center of a piston rod of the oil cylinder when the tested part is offset is overcome. The work that two hydro-cylinders need synchronous lift completion in the past, just can accomplish by a hydro-cylinder now, make equipment mechanical structure simpler, reduced the degree of difficulty of automatically controlled control simultaneously.

4. And a height adjusting mechanism is adopted, so that the milling cutter is ensured to be at a fixed position, and the milling depth can be adjusted.

5. The milling head, the hardness head and the indentation measuring device are all arranged on the sliding plate on the outer side of the main beam, so that equipment maintenance is facilitated, and the milling head, the hardness head and the indentation measuring device can move to adjust the working positions.

Drawings

FIG. 1 is a schematic view of an upper positioning height adjustable clamp;

FIG. 2 is a cross-sectional view of the height adjustment mechanism of FIG. 1;

FIG. 3 is a schematic diagram of an upper positioning height adjustable clamping device used on a hardness on-line detection system.

Description of the components in fig. 1-3:

1. a base; 2. an oil cylinder base; 3. a linear guide rail pair; 4. a guide bent plate; 5. a work table; 6. a support member; 7. lifting and clamping oil cylinders; 8. a piston rod; 9. clamping the cross beam; 10. a height adjustment mechanism; 11. a rigid connecting shaft; 12. testing the part; 13. a column cross beam; 14. a rigid column; 15. moving the wedge block; 16. locking the screw; 17. a T-shaped nut; 18. a precision lead screw; 19. a lead screw mounting seat; 20. positioning a reference surface; 21. a main beam mounting base; 22. an upper positioning height adjustable clamping device; 23. a horizontal linear guide rail pair; 24. milling a head; 25. a hardness head; 26. a slide plate; 27. an indentation measuring mechanism; 28. a main beam.

Detailed Description

The invention will be further explained with reference to the drawings and the detailed description below:

as can be seen from fig. 1 to 3, the upper positioning height adjustable clamping device of the present invention comprises an upper positioning mechanism, a height adjusting mechanism, and a lifting clamping mechanism; wherein:

as shown in figure 1, the utility model discloses be provided with a workstation 5 that can satisfy the part size scope of being surveyed, have a plurality of highly the same support piece 6 along length direction parallel arrangement on the workstation, satisfy the lift and press from both sides tight needs. A flat-bottomed V-shaped groove for placing the test piece 12 is provided on the upper portion of the support 6.

The lifting clamping mechanism is a lifting clamping oil cylinder 7 which is offset under the center of the workbench 5, and a piston rod 8 is vertically connected with the bottom of the workbench 5. The lifting clamping oil cylinder 7 is arranged in the middle of the oil cylinder base 2, a flat-bottom V-shaped opening is formed in the upper portion of the oil cylinder base 2, and the oil cylinder base is fixed on the base 1. The pair of guide bent plates 4 are symmetrically arranged on two sides of the oil cylinder base 2 and are fixedly connected with the bottom of the workbench 5.

The guide bent plate 4, the workbench 5 and the support pieces 6 are connected together through screws to form a rigid support, the whole rigid support is lifted and guided by a precise guide mechanism, the precise guide mechanism is a plurality of pairs of linear guide rail pairs 3, and the precise guide mechanism is arranged between the oil cylinder base and the plurality of pairs of guide bent plates through the plurality of pairs of linear guide rail pairs 3 in a connecting manner, so that the motion of the piston rod of the oil cylinder is ensured to have enough rigidity, and the overturning moment caused by the fact that the gravity center of a measured part is not positioned at the center of the piston rod of the oil cylinder when the measured part is biased is overcome.

As shown in fig. 1, the upper positioning mechanism is a portal frame structure arranged on the base 1 at one side of the main beam 28, and the portal frame structure is a lateral portal frame composed of the base 1, the rigid upright 14 and the upright beam 13; the two lateral portal frames are respectively positioned at two sides of the workbench 5 and form a positive portal frame together with the rigid connecting shaft 11 and the clamping beam 9; the forward portal frame is positioned above the lateral portal frame. The clamping beam is located at the top of the forward portal frame and is disposed above the table, support 6 and test part 12. The clamping cross beam is crossed and vertical to the length direction of the workbench and the test part placed on the supporting piece, and the clamping cross beam and the supporting piece are used for clamping the test part.

The clamping cross beam 9 can flexibly select the installation number according to the requirement of the part to be measured; one, two or more than two clamping cross beams 9 can be connected and arranged along the length direction of the upright cross beam 13 through a corresponding number of rigid connecting shafts 11, and the clamping cross beams are arranged in parallel. In this embodiment, two parallel clamping beams are used. The clamping cross beam can realize the upper clamping, the fixed height, the replaceable positions and the replaceable number, thereby realizing the clamping of the measured part.

As can be seen from fig. 1 to 2, a height adjusting mechanism 10 is provided on each clamping beam 9, and the height adjusting mechanism includes the clamping beam 9, a movable wedge 15, a positioning reference surface 20, a screw rod mounting seat 19, a precision screw rod 18, a pair of T-nuts 17, and a locking screw 16, wherein:

the clamping beam 9 is matched with the movable wedge block 15 in a hoisting mode through a pair of T-shaped nuts at the lower end of a pair of locking screws 16 and a T-shaped groove on the movable wedge block 15. The bottom middle inclined plane of the clamping beam 9 is matched with the top inclined plane of the movable wedge 15, and the bottom of the movable wedge 15 is provided with a positioning reference plane 20 for positioning and clamping the test part 12.

A precision lead screw 18 is horizontally screw-fitted to the movable wedge 15. The screw mount 19 is t-shaped, the horizontal end of which is fixed to the clamping beam 9 and the vertical end of which has an adjusting end through which a precision screw passes. The precision screw 18 is only rotatable but not axially movable relative to the screw mount 19.

During adjustment, the locking screw 16 is loosened, a gap is generated between the upper end surface of the T-shaped nut 17 and the contact surface of the T-shaped groove, the movable wedge block 15 can be pushed to move back and forth along the middle inclined plane at the bottom of the clamping beam by rotating the precise lead screw 18, and the milling depth is changed by changing the distance between the positioning reference surface 20 and the base 1; after the milling depth adjustment is completed, the locking screw 16 is tightened to fasten the movable wedge 15 and the clamping beam 9 together.

The utility model discloses an go up positioning mechanism, lifting clamping mechanism and height adjusting mechanism's setting, can make the part of being surveyed press from both sides tightly between location reference surface and support piece to make hardness test face milling cutter relatively, sclerometer pressure head and hardness value measuring device's distance become fixed distance, accomplish the depthkeeping of the part of being surveyed and mill or grinding, experimental power and apply and hardness value measurement.

When one clamping cross beam 9 is used, the hardness test of smaller parts can be met, and the hardness test at the end parts of the parts can also be met.

When two or more clamping beams 9 are used, the hardness test of a larger part can be met, and the hardness test at the end part of the part can also be met.

As shown in fig. 3, the upper positioning height adjustable clamping device can be applied to an online hardness detection system. The hardness online detection system comprises a pair of main beam mounting seats 21 arranged on a base 1 on one side of an upper positioning height-adjustable clamping device 22, a main beam 28 connected and fixed on the pair of main beam mounting seats, a sliding plate 26 connected with the main beam 28 through a horizontal linear guide rail pair 23, a milling head or grinding head 24 arranged on the sliding plate 26, a hardness head 25 and an indentation measuring mechanism 27. The slide plate 26 is driven by a ball screw and a motor to move, and the milling head or the grinding head, the hardness head and the indentation measuring mechanism are driven by the slide plate to transversely move along the horizontal linear guide rail pair 23, so that the working positions are alternately adjusted.

The utility model discloses a theory of operation is: refer to fig. 1 to 3.

Firstly, the milling depth is adjusted by the height adjusting mechanism 10 according to the process requirements of the test piece. When the milling depth adjusting device is used for adjusting, the locking screw 16 is loosened, a gap is formed between the upper end surface of the T-shaped nut 17 and the contact surface of the T-shaped groove, the precision lead screw 18 is rotated to push the movable wedge block 15 to move back and forth along the inclined plane of the bottom of the clamping cross beam 9, so that the distance between the positioning reference surface 20 and the base 1 is changed, and the milling depth is adjusted. The locking screw 16 is then tightened to firmly connect the moving wedge 15 to the clamping beam 9.

And adjusting the overflow valve of the hydraulic station according to the magnitude of the test force to enable the output pressure of the oil cylinder to be larger than the test force.

The hydraulic station is used for supplying oil to the lifting clamping oil cylinder 7, the piston rod 8 extends out, the piston rod pushes the workbench 5 to move upwards, the test part 12 is pressed on a positioning reference surface 20 in the height adjusting mechanism on the clamping cross beam 9 through the supporting piece 6, and upper positioning and clamping are completed.

Claims

1. The clamping device with the adjustable upper positioning height is characterized in that,

comprises an upper positioning mechanism, a lifting clamping mechanism and a height adjusting mechanism;

a lifting clamping oil cylinder in the lifting clamping mechanism is offset under the center of the workbench and is connected with the workbench through a piston rod; the guide bent plate is connected with the workbench and the supporting piece to form a rigid support, and the whole rigid support is lifted and guided by a precise guide mechanism connected and arranged between the guide bent plate and the oil cylinder base.

2. The upper positioning height adjustable clamping device according to claim 1, wherein the clamping cross beam in the height adjusting mechanism is matched with a movable wedge block in a hoisting way through a T-shaped nut at the lower end of a locking screw and a T-shaped groove on the movable wedge block; the top inclined plane of the movable wedge block is matched with the inclined plane in the middle of the bottom of the clamping beam, and the bottom of the movable wedge block is provided with a positioning reference plane; the horizontal thread fit has accurate lead screw on the removal voussoir, and the adjustment end of accurate lead screw passes the inverted U-shaped groove of setting on the lead screw mount pad, and the lead screw mount pad is fixed in the tight crossbeam bottom of clamp.

3. The upper positioning height adjustable clamping device according to claim 2, wherein the portal frame structure is a lateral portal frame consisting of a base, rigid columns, and column beams; the two lateral portal frames are respectively positioned at two sides of the workbench and form a positive portal frame together with the rigid connecting shaft and the clamping beam, and the positive portal frame is positioned above the lateral portal frames; the clamping cross beams are connected and arranged in the length direction of the upright post cross beam through rigid connecting shafts in corresponding quantity.

4. The upper positioning height adjustable clamp device according to claim 3, wherein the clamp beam is perpendicular to the length direction of the table.

5. The upper positioning height adjustable clamping device as claimed in claim 4, wherein a plurality of supporting members with the same height are arranged on the working table in parallel along the length direction.

6. The upper positioning height adjustable clamping device as claimed in claim 5, wherein the upper part of the supporting member is provided with a flat-bottomed V-shaped groove for placing a test part.

7. The adjustable upper positioning height clamping device according to claim 6 wherein the lifting clamping cylinder is mounted at a central location on a cylinder base, the cylinder base is fixed to the base, and a flat bottom V-shaped opening is provided at an upper portion of the cylinder base.

8. The clamping device with adjustable upper positioning height as claimed in claim 7, wherein the bottom of the working platform is fixedly connected with a plurality of pairs of guiding bent plates symmetrically arranged at two sides of the piston rod, and the plurality of pairs of guiding bent plates are symmetrically arranged at two sides of the oil cylinder base respectively.

9. The upper positioning height adjustable clamping device according to claim 8, wherein the precise guide mechanism is a plurality of pairs of linear guide rail pairs, and the plurality of pairs of linear guide rail pairs are symmetrically arranged at the left side and the right side of the oil cylinder base.

10. The online hardness detection system is characterized by comprising the upper positioning height adjustable clamping device as claimed in any one of claims 1 to 9, a pair of main beam mounting seats arranged on the base and positioned at one side of the upper positioning height adjustable clamping device, a main beam fixedly connected to the pair of main beam mounting seats, a sliding plate capable of sliding along the main beam through a horizontal linear guide rail pair, and a milling head or a grinding head, a hardness head and an indentation measuring mechanism which are arranged on the sliding plate.