CN211013735U

CN211013735U - Prestress clamping device and sample grinding machine

Info

Publication number: CN211013735U
Application number: CN201921797793.9U
Authority: CN
Inventors: 凌建飞; 夏传林; 陈洪昌
Original assignee: Cssc Marine Power Components Co ltd
Current assignee: Cssc Marine Power Components Co ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-07-14
Anticipated expiration: 2029-10-24

Abstract

The utility model discloses a prestressing force clamping device and sample grinder, prestressing force clamping device include prestressing force arm and handle housing, the output actuating end of prestressing force arm with handle housing detachable connects, the pressure of the output actuating end of prestressing force arm keeps the level all the time so that the cover face that compresses tightly of handle housing keeps vertical all the time, and prestressing force arm includes drive arm subassembly, pressure applying piece and spacing guide rail spare set up lead to and exert pressure on the drive arm subassembly; the sample grinding machine is provided with the prestress clamping device, and the workpiece is clamped by the prestress clamping device to be automatically ground, so that a large amount of working hours and manpower are saved, the grinding efficiency and safety guarantee of the test block are improved, and the labor intensity of workers is reduced.

Description

Prestress clamping device and sample grinding machine

Technical Field

The utility model relates to an equipment of polishing especially relates to prestressing force clamping device and sample grinder.

Background

In a foundry shop, a front laboratory needs to sample molten iron/molten steel components in the smelting process of a smelting furnace, make test blocks and perform small-component and multi-batch material analysis, and before metal component analysis, the surfaces of the test blocks need to be polished. Because the test block is mostly the diameter 30mm, the circular metal block of thickness 5mm, conventional polishing method adopts modes such as hand to hold to press the test block and polishes on the emery wheel piece of sample grinder, because the test block is less and thin, operating personnel's carelessness makes the finger contact the emery wheel piece easily to receive the damage of different degrees, need personnel to operate by side during polishing all the time, occupied a large amount of time, reduced labor efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the prestress clamping device, the sample grinding machine and the workpiece grinding method are provided, the problems can be solved, and the purpose of grinding the test block safely, conveniently and efficiently is finally achieved.

The design principle is as follows: the polishing mode is improved, a mechanical arm capable of being stressed in advance is additionally arranged on the existing sample polishing machine, and meanwhile, the mechanical arm is matched with a handle for clamping, so that a test block is pressed on a grinding wheel sheet under the condition that the test block is not required to be pressed manually or contacted; meanwhile, the mechanical arm with the pre-stress function can automatically press the test block.

The technical scheme is as follows: the purpose of the utility model is realized by adopting the following technical scheme.

The prestress clamping device for the sample grinding machine comprises a prestress mechanical arm and a handle housing, wherein an output actuating end of the prestress mechanical arm is detachably connected with the handle housing, the pressure of the output actuating end of the prestress mechanical arm is kept horizontal all the time so that a pressing cover surface of the handle housing is kept vertical all the time, the prestress mechanical arm comprises a transmission arm assembly, a pressing piece and a limiting guide rail piece, and the pressing piece and the limiting guide rail piece are arranged on the transmission arm assembly to guide and press.

Preferably, the transmission arm assembly of the prestress clamping device is a four-bar plane mechanism of a parallel hinge, the four-bar plane mechanism of the parallel hinge comprises a first swing bar, a second swing bar, a handle and a fixed rod, bottom pivots of the first swing bar and the second swing bar which are equal in length and arranged in parallel are hinged to two ends of the fixed rod, pivots of the upper ends and the lower ends of the first swing bar and the second swing bar which are equal in distance are hinged to a rod body of the handle, and the lower portion of the rod body of the fixed rod is fixedly connected to a connecting seat.

Preferably, one end of the pressing piece is pivotally connected to the lower rod body of the first swing rod, and the other end of the pressing piece is pivotally connected to the upper rod body of the second swing rod; and a guide rail groove is formed in the upper part of one end of the limiting guide rail part, the guide rail groove is in embedded sliding connection with a guide part arranged on the upper rod body of the first swing rod, and the other end of the limiting guide rail part is pivotally connected to the lower rod body of the second swing rod.

Preferably, the pressing piece and the limiting guide rail piece are arranged on two side faces of the four-bar plane mechanism of the parallel hinge in a relatively crossed manner.

Preferably, the pressing piece is a cylinder, an oil cylinder or a tension spring; the limiting guide rail part is a guide rail plate with a guide rail groove.

Preferably, the handle includes the handle body of rod, sets up handle portion and the setting of handle body of rod outer end are in the inner application of force connection pad of the handle body of rod annular array that link up sets up the connecting hole in the quotation of application of force connection pad the outside quotation middle part of application of force connection pad outwards protrusion sets up the location flange.

Preferably, the outer side of the handle housing is provided with inner concave cover grooves with different specifications, the inner side of the handle housing is provided with a circular positioning groove opposite to the inner concave cover grooves, threaded connection holes are uniformly distributed in an annular matrix on the outer peripheral side of the positioning groove, the positioning groove is matched with a positioning convex disc of the force application connecting disc in an embedded mode, and the handle housing is connected to the force application connecting disc through a bolt.

Preferably, one end of the force application connecting disc of the handle is arranged close to the first swing rod.

A sample grinding machine comprises a base rack, a motor and a grinding wheel, wherein the prestress clamping device is fixedly connected to the base rack through a supporting rod arranged at the bottom end of the prestress clamping device.

Preferably, the motor is a double-head motor, the two output ends of the double-head motor are both provided with a grinding wheel, and the two sides of the pedestal rack are both provided with a prestress clamping device.

A method for polishing a workpiece by adopting the sample polishing machine comprises the following steps:

s1, measuring the size, designing a handle housing, measuring the excircle size of a workpiece to be polished, and determining the size of an inner concave housing groove of the handle housing;

s2, manufacturing a handle cover, manufacturing the handle cover corresponding to the workpiece to be polished according to the size determined in the step S1, and simultaneously enabling half of the thickness of the workpiece to be embedded into the inner concave cover groove;

s3, mounting a prestress clamping device, fixing the bottom end of the prestress clamping device to a base rack of a sample grinding machine through a support rod, and connecting the output end of the prestress clamping device with the handle housing through a force application connecting disc of a handle;

s4, installing a workpiece, namely, pulling the handle part at the outer end of the handle outwards, and installing the workpiece to be polished into the inner concave cover groove of the handle cover;

s5, sample feeding and polishing, wherein a workpiece to be polished is attached to the grinding wheel by pushing the handle part at the outer end of the handle inwards, and the workpiece is automatically polished by starting the motor after hands are loosened.

Compared with the prior art, the beneficial effects of the utility model reside in that: the grinding wheel can be installed on an existing stokehole laboratory sample grinding machine, a test block or a workpiece needing to be ground can be easily placed after installation, the mechanical arm with the prestress is rotated, and the handle provided with the test block or the workpiece is placed on the grinding wheel to be ground. A large amount of man-hours and manpower have been saved, have improved the efficiency and the safety guarantee of polishing of test block, have reduced artificial intensity of labour.

Drawings

Fig. 1 is a schematic structural diagram of a sample grinding machine according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a pre-stressed clamping device;

fig. 3 is an exploded view of the handle and handle housing assembly.

In the figure: 100. a pre-stressed clamping device; 101. a first swing link; 102. a second swing link; 103. a handle; 104. fixing the rod; 105. a force application connecting disc; 1051. positioning the convex disc; 106. a connecting seat; 107. applying a pressing piece; 108. a limiting guide rail member; 109. a guide rail groove; 110. a handle housing; 111. a positioning groove; 112. an inner concave cover groove; 200. a support bar; 300. a base stand; 400. a motor; 500. and (5) grinding wheels.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a prestressed clamping device for a sample grinder, referring to fig. 2, the prestressed clamping device 100 includes a prestressed mechanical arm and a handle housing 110, an output actuating end of the prestressed mechanical arm is detachably connected to the handle housing 110, a pressure of the output actuating end of the prestressed mechanical arm is always kept horizontal so that a pressing cover of the handle housing 110 is always kept vertical, the prestressed mechanical arm includes a driving arm assembly, a pressing member 107 and a limiting guide rail member 108, and the pressing member 107 and the limiting guide rail member 108 are arranged on the driving arm assembly for guiding and pressing.

Specifically, in one embodiment, the driving arm assembly of the pre-stressed clamping device 100 is a parallel-hinged four-bar plane mechanism, the parallel-hinged four-bar plane mechanism includes a first swing link 101, a second swing link 102, a handle 103 and a fixing rod 104, bottom ends of the first swing link 101 and the second swing link 102, which are equal in length and arranged in parallel, are pivotally connected to two ends of the fixing rod 104, upper ends and lower ends of the first swing link 101 and the second swing link 102 are pivotally connected to a rod body of the handle 103 at equal intervals, and a connecting seat 106 is fixedly connected to a lower portion of the rod body of the fixing rod 104.

Wherein, the pressing piece 107 and the limiting guide rail piece 108 are arranged on two sides of the four-bar plane mechanism of the parallel hinge in a relatively crossed manner.

One end of the pressing piece 107 is pivotally connected to the lower rod body of the first swing link 101, and the other end is pivotally connected to the upper rod body of the second swing link 102; a guide rail groove 109 is formed in the upper portion of one end of the limiting guide rail 108, the guide rail groove 109 is in sliding connection with a guide member provided on the upper rod body of the first swing link 101 in an embedded manner, and the other end of the limiting guide rail 108 is pivotally connected to the lower rod body of the second swing link 102.

Wherein, the pressing piece 107 is a cylinder, an oil cylinder or a tension spring, preferably a tension spring; the limit rail member 108 is a rail plate with a rail groove 109.

Referring to fig. 3, the handle 103 includes a handle rod, a handle portion disposed at an outer end of the handle rod, and a force application connecting plate 105 disposed at an inner end of the handle rod, wherein connection holes are disposed in a circular array penetrating a disk surface of the force application connecting plate 105, and a positioning convex disk 1051 is disposed in a middle portion of an outer disk surface of the force application connecting plate 105 and protrudes outward.

Wherein, the outer side of the disc-shaped handle cover shell 110 is provided with inner concave cover grooves 112 with different specifications, the inner side of the handle cover shell 110 is provided with a circular positioning groove 111 opposite to the inner concave cover groove 112, the outer periphery of the positioning groove 111 is provided with threaded connection holes which are distributed in an annular matrix, and the positioning groove 111 is embedded and matched with the positioning convex disc 1051 of the force application connecting disc 105, and the handle cover shell 110 is connected to the force application connecting disc 105 through bolts.

Further, one end of the force application connecting plate 105 of the handle 103 is disposed near the first swing link 101.

Referring to fig. 1, a sample grinding machine comprises a pre-stressed clamping device 100, a support rod 200, a base platform 300, a motor 400 and a grinding wheel 500, wherein the pre-stressed clamping device 100 is fixedly connected to the base platform 300 through the support rod 200 arranged at the bottom end.

Wherein, the motor 400 is a double-head motor, two output ends of the double-head motor are respectively provided with a grinding wheel 500, and two sides of the base rack 300 are respectively provided with a prestressed clamping device 100.

s1, measuring the size, designing a handle cover 110, measuring the excircle size of a workpiece to be polished, and determining the size of an inner concave cover groove 112 of the handle cover 110;

s2, manufacturing a handle cover 110, manufacturing the handle cover 110 corresponding to the workpiece to be polished according to the size determined in the step S1, and simultaneously enabling half of the thickness of the workpiece to be embedded into the inner concave cover groove 112;

s3, mounting the prestress clamping device 100, fixing the bottom end of the prestress clamping device 100 to a base rack 300 of a sample grinding machine through a support rod 200, and connecting the output end of the prestress clamping device 100 with a handle housing 110 through a force application connecting disc 105 of a handle 103;

s4, installing the workpiece, namely, pulling the handle part at the outer end of the handle 103 outwards, and installing the workpiece to be polished into the inner concave cover groove 112 of the handle cover 110;

and S5, delivering samples and polishing, wherein the workpiece to be polished is attached to the grinding wheel 500 by pushing the handle part at the outer end of the handle 103 inwards, and after the hand is loosened, the motor 400 is started to automatically polish the workpiece.

In sum, the handle housing 110 is designed with the inner concave housing grooves 112 of different specifications according to different workpieces to be polished, so as to meet the polishing requirements of workpieces of different specifications and realize automatic polishing without clamping or pressing.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a grind appearance machine prestressing force clamping device which characterized in that: the prestress clamping device (100) comprises a prestress mechanical arm and a handle housing (110), wherein an output actuating end of the prestress mechanical arm is detachably connected with the handle housing (110), the pressure of the output actuating end of the prestress mechanical arm is always kept horizontal so that a pressing cover surface of the handle housing (110) is always kept vertical, the prestress mechanical arm comprises a transmission arm assembly, a pressing piece (107) and a limiting guide rail piece (108), and the pressing piece (107) and the limiting guide rail piece (108) are arranged on the transmission arm assembly to guide and press.

2. The pre-stressed gripping apparatus of claim 1, wherein: the transmission arm assembly of the prestress clamping device (100) is a four-bar plane mechanism of a parallel hinge, the four-bar plane mechanism of the parallel hinge comprises a first swing rod (101), a second swing rod (102), a handle (103) and a fixed rod (104), bottom ends of the first swing rod (101) and the second swing rod (102) which are equal in length and arranged in parallel are hinged to two ends of the fixed rod (104), upper ends of the first swing rod (101) and the second swing rod (102) are hinged to a rod body of the handle (103) through pivots with the lower ends being equal in distance, and the lower portion of the rod body of the fixed rod (104) is fixedly connected to a connecting seat (106).

3. The pre-stressed gripping apparatus of claim 2, wherein: one end of the pressing piece (107) is pivotally connected to the lower rod body of the first swing rod (101), and the other end of the pressing piece is pivotally connected to the upper rod body of the second swing rod (102); and a guide rail groove (109) is formed in the upper part of one end of the limiting guide rail piece (108), the guide rail groove (109) is in embedded sliding connection with a guide piece arranged on the upper rod body of the first swing rod (101), and the other end of the limiting guide rail piece (108) is pivotally connected to the lower rod body of the second swing rod (102).

4. The pre-stressed gripping apparatus of claim 3, wherein: the pressing piece (107) and the limiting guide rail piece (108) are arranged on two side surfaces of the four-bar plane mechanism of the parallel hinge in a relatively crossed mode.

5. The pre-stressed gripping apparatus of claim 1 or 4, wherein: the pressing piece (107) is a cylinder, an oil cylinder or a tension spring; the limiting guide rail piece (108) is a guide rail plate with a guide rail groove (109).

6. The pre-stressed gripping apparatus of claim 2, wherein: handle (103) include the handle body of rod, set up and be in the handle portion of handle body of rod outer end and setting are in handle body of rod inner application of force connection pad (105) the annular array that link up sets up the connecting hole in the quotation of application of force connection pad (105) outside quotation middle part of application of force connection pad (105) outwards protrusion sets up location flange (1051).

7. The pre-stressed gripping apparatus of claim 6, wherein: the handle comprises a disc-shaped handle housing (110), wherein the outer side of the handle housing (110) is provided with inner concave housing grooves (112) of different specifications, the inner side of the handle housing (110) is provided with a circular positioning groove (111) which is opposite to the inner concave housing groove (112), uniformly distributed threaded connection holes of an annular matrix are formed in the outer peripheral side of the positioning groove (111), the positioning groove (111) is matched with a positioning convex disc (1051) of a force application connecting disc (105) in a chimeric mode, and the handle housing (110) is connected to the force application connecting disc (105) through a bolt.

8. The pre-stressed gripping apparatus of claim 6, wherein: one end of the force application connecting disc (105) of the handle (103) is arranged close to the first swing rod (101).

9. A sample grinding machine comprises a base rack (300), a motor (400) and a grinding wheel (500), and is characterized in that: a pre-stressed gripping device (100) according to any one of claims 2-8, being fixedly connected to the base gantry (300) by means of support rods (200) arranged at the bottom end.

10. The sample grinder of claim 9, wherein: the grinding machine is characterized in that the motor (400) is a double-head motor, two output ends of the double-head motor are respectively provided with a grinding wheel (500), and two sides of the base rack (300) are respectively provided with a prestress clamping device (100).