CN110091242A - A kind of irregular metallographic specimen polishing clamp - Google Patents

Abstract

The invention discloses a polishing fixture for an irregular metallographic sample, which comprises an inner and outer tooth screw, an auxiliary holding plate, an inner and outer sliding plate and a clamping claw. The sliding plate is placed in the chute, and the angle can be adjusted according to the shape of the sample to realize auxiliary clamping of the sample in any angular direction. Two holes are opened on the inner and outer sliding plates, one hole is connected by a short bolt, the other hole is It is connected by long bolts and has the function of adjusting radial length. The invention has simple structure and low cost, and is suitable for samples of various shapes. The part cooperates with the inner screw to realize more precise adjustment of the position of the splint, so as to realize the clamping of multi-size samples. Clamping function for multi-size and multi-shape specimens.

Description

A polishing fixture for irregular metallographic samples

technical field

The invention relates to a polishing fixture for irregular metallographic samples, which belongs to the technical field of machining.

Background technique

Polishing refers to the use of mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. It is the modification of the surface of the workpiece by using polishing tools and abrasive particles or other polishing media. The laboratory often uses a polishing wheel as a polishing tool. The centrifugal force generated when the polishing wheel rotates at a high speed is not safe without using a fixture. The polishing fixture is developed from this. At present, the fixtures are mainly used for regular collection shapes at home and abroad, such as rectangles, circles, etc. shape, etc., lack of research on fixtures with complex shapes, and the present invention designs fixtures for the insufficiency of the existing situation.

SUMMARY OF THE INVENTION

In view of the above problems in the prior art, the present invention provides a polishing fixture for irregular metallographic samples, and provides a polishing fixture suitable for various shapes and with a simple structure.

In order to achieve the above purpose, the technical scheme adopted in the present invention is: an irregular metallographic sample polishing fixture, comprising internal and external teeth screws, an auxiliary holding plate, an inner sliding plate, an outer sliding plate, a clamping plate, a profile, a T-shaped groove, Right gripper jaw, left gripper jaw and housing;

The shell and the auxiliary holding plate are connected by bolts; the shell is a square hollow cylinder; the profile is a rectangular solid cylinder; the number of the profiles is two, and they are evenly and symmetrically arranged on the shell The two ends of the profile are respectively connected to the cylinders on the two symmetrical sides of the housing, and are connected by fastening bolts; the bottom of the profile is provided with a T-shaped groove; the profile and the cylinder head bolt are connected through the T-shaped groove;

The right clamping claws and the left clamping claws are respectively connected with the profiles through cylinder head bolts; the right clamping claws and the left clamping claws are symmetrically distributed, and the overall shape is a semicircular body, and the right clamping claws and the left clamping claws are symmetrically distributed. Both sides of the left clamping claw are provided with two symmetrically distributed arc-shaped U-shaped grooves, and the center is provided with a threaded hole connected with the inner and outer screw screws; the upper surface of the U-shaped groove is located on the right clamping claw and the left clamping claw. Upper sliding grooves are opened on the inner and outer sides of the holding claw; the lower surface of the U-shaped groove is located on the inner and outer sides of the right clamping claw and the left clamping claw. An inner slide plate is connected between the upper chute and the lower chute on the inner side of the holding claw, and an outer slide plate is connected between the upper chute and the lower chute on the outer side of the right clamping claw and the left clamping claw; A short bolt and a long bolt are connected from top to bottom between the slide plates; the inner end of the short bolt is provided with a nut.

Further, the left clamping claw and the inner thread post are connected by interference fit; the inner thread post and the short inner screw are connected by thread; the inner end part of the short inner screw is connected with the clamping plate. Clearance fit connection; the outer end of the short inner screw is connected with the left tightening handle by interference fit.

Further, the right clamping claw and the inner and outer thread screws are connected by clearance fit; the inner and outer thread screws are threadedly connected with the long inner thread, and the inner and outer thread screws are connected with the right tightening handle a by interference fit; the long thread The inner screw is connected with the right tightening handle b by interference fit; the long inner screw is connected with the clamping plate through clearance fit.

Further, the left clamping claw and the outer casing are connected and fixed together by an inner thread column, and the short inner screw and the clamping plate are connected by clearance fit.

Further, the right clamping claw and the outer casing are movably connected to the outer casing through one end of the inner and outer tooth screws through the outer casing.

Further, it also includes a sample, the sample is placed between the right clamping claw and the left clamping claw, and is tightly connected by a long bolt located between the inner sliding plate and the outer sliding plate and the clamping plate.

The beneficial effects of the present invention are as follows: the present invention has a simple mechanical structure, low cost, convenient operation, and the unique design of the clamping jaws enables flexible adjustment according to metallographic samples of various shapes, and at the same time, the inner and outer teeth screw and the long inner screw are used separately. Guarantee the accuracy of size adjustment.

The invention specially designs the T-shaped groove on the top of the two cylinder head bolts to connect the profiles in order to avoid the clamping jaws not being horizontal in the horizontal direction, and the two cylinder head bolts are symmetrical about the middle plane of the clamping jaws, so that the clamp can withstand the The load is balanced on both sides.

Description of drawings

Fig. 1 is the overall assembly drawing structure schematic diagram of the present invention;

Figure 2 is a schematic top view of the structure of the present invention;

Fig. 3 is the T-shaped groove structure schematic diagram of the present invention;

4 is a structural diagram of a gripper and a chute of the present invention;

FIG. 5 is a working principle diagram of the present invention.

In the picture: 1. Left-hand tightening handle, 2. Short inner screw, 3. Shell, 4. Auxiliary holding plate, 5. Long bolt, 6. Short bolt, 7. Profile, 8. Internal and external screw, 9. Right-handed Tightening handle a, 10, Long inner screw, 11, Right tightening handle b, 12, Clamping plate, 13, Internal thread post, 14, Bolt, 15, Fastening bolt, 16, Lower chute, 17, Upper chute , 18, T-slot, 19, cylinder head bolt, 20, sample, 21, inner slide plate, 22, right clamping jaw, 23, left clamping jaw, 24, outer slide plate.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention, and not to limit the scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention, and the terms used herein in the description of the present invention are only for describing specific implementations The examples are not intended to limit the invention.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, a polishing fixture for irregular metallographic samples includes internal and external screw 8, auxiliary holding plate 4, inner sliding plate 21, outer sliding plate 24, clamping plate 12 , profile 7, T-shaped groove 18, right clamping claw 22, left clamping claw 23 and shell 3;

The casing 3 and the auxiliary holding plate 4 are connected by bolts 14; the casing 3 is a square hollow cylinder; the profile 7 is a rectangular solid cylinder; the number of the profiles 7 is two, And evenly and symmetrically arranged on the shell 3, the two ends of the profile 7 are respectively connected to the cylinders on the two symmetrical sides of the shell 3, and are connected by fastening bolts 15; the bottom of the profile 7 is provided with a T-shaped groove 18; The profile 7 is connected with the cylinder head bolt 19 through the T-slot 18;

The right clamping claws 22 and the left clamping claws 23 are respectively connected with the profile 7 through cylinder head bolts 19; the right clamping claws 22 and the left clamping claws 23 are symmetrically distributed, and the overall shape is a semicircle. , both sides of the right clamping claw 22 and the left clamping claw 23 are provided with two symmetrically distributed arc-shaped U-shaped grooves, and the center is provided with a threaded hole connected with the internal and external screw 8; the upper part of the U-shaped groove The upper chute 17 is opened on the inner and outer sides of the right clamping claw 22 and the left clamping claw 23; the lower surface of the U-shaped groove is located at the inner and outer sides of the right clamping claw 22 and the left clamping claw 23. There is a lower slot 16; an inner slide 21 is connected between the upper chute 17 and the lower slot 16 on the inner side of the right clamping claw 22 and the left clamping claw 23, and the right clamping claw 22 and the left clamping claw 23 are close to each other. The outer slide 24 is connected between the upper chute 17 and the lower chute 16 on the outside; the inner slide 21 and the outer slide 24 are connected from top to bottom with short bolts 6 and long bolts 5; the short bolts 6 The inner end has a nut.

The left clamping claw 23 is connected with the inner thread column 13 by interference fit; the inner thread column 13 is connected with the short inner screw 2 by thread; the inner end of the short inner screw 2 is connected to the clamping The plates 12 are connected by clearance fit; the outer end of the short inner screw 2 is connected with the left tightening handle 1 by interference fit.

The right clamping claw 22 is connected with the inner and outer screw 8 through clearance fit; the inner and outer screw 8 is threadedly connected with the long inner screw 10, and the inner and outer screw 8 is connected with the right tightening handle a 9 by interference fit; The long inner screw 10 is connected with the right tightening handle b11 by interference fit; the long inner screw 10 and the clamping plate 12 are connected by clearance fit.

The left clamping claw 23 and the housing 3 are connected and fixed together by the inner thread column 13, and the short inner screw 2 and the clamping plate 12 are connected by clearance fit.

The right clamping claw 22 and the outer casing 3 are movably connected to the outer casing 3 through one end of the inner and outer teeth screw 8 through the outer casing 3 .

It also includes a sample 20, which is placed between the right clamping claw 22 and the left clamping claw 23, and is supported by the long bolt 5 between the inner slide plate 21 and the outer slide plate 24 and the clamping plate 12. Tight connection.

The present invention proposes a polishing fixture for irregular metallographic samples. The outer shape of the right clamping claw 22 adopts a unique semicircular design. A threaded hole is opened in the center of the side surface of the semicircle. The screw 8 is connected by screw thread, and the inner and outer teeth screw 8 can be used to separate the traverse function of the clamping plate 12 and the transverse movement function of the right clamping claw 22. The left clamping claw 23 is the same as the clamping plate 1. Unique circular design, a through hole is opened in the center of the side of the semicircle, the through hole is connected with the inner threaded column 13 through interference fit, and a hole is opened in the center of the lower half of the two sides of the shell 3, and the left side is The through hole is opened on the face, and the inner threaded hole is opened on the right side. The left through hole is connected with the inner threaded column 13 through interference fit, and the right inner threaded hole is connected with the inner and outer screw 8 through threaded fit. , the shell 3 and the profile 7 are connected by fastening bolts 15, the profile 7 is provided with a T-shaped groove 18, the T-shaped groove 18 and the right clamping claw 22 are connected by a cylinder head bolt 19, the cylindrical The head bolt 19 can slide freely in the T-shaped groove, thereby cooperating with the traverse function of the inner and outer screw 8. The main function of the cylindrical head bolt 19 is to maintain the vertical height of the right clamping jaw 22, and the left clamping The claw 23 is connected with the T-shaped groove 18 by the cylinder head bolt 15. The cylinder head bolt 15 connected with the left clamping claw 23 does not have the function of sliding freely in the T-shaped groove 18, and the cylinder head is only responsible for fixing the left clamp. The vertical height of the holding claw 23, the lateral movement and clamping of the sample are realized by the right clamping claw 22, and the casing 3 and the auxiliary holding plate 4 are connected by bolts 14.

As shown in Figures 3-4, the long inner screw 10 and the inner and outer screw 8 are connected by thread, and the long inner screw 10 and the clamping plate 12 are connected by clearance fit. When the long inner screw 10 rotates, the clamping plate 12 does not follow the With the rotation of the long inner screw 10, the short inner screw 2 is connected with the inner thread column 13 through threads, and the short inner screw 2 is connected with the clamping plate 12 through clearance fit. When the short inner screw 2 rotates, the clamping The holding plate 12 does not rotate with the short inner screw 2 . The inner sliding plate 21 and the right clamping claw 22 are connected to the lower sliding groove 16 through the upper chute 17 , and the outer sliding plate 24 is connected to the right clamping claw 22 according to the same principle as the inner sliding plate.

As shown in Figure 5, the working principle: the present invention mainly realizes the clamping of the metallographic sample with the functions of traverse clamping and multi-angle adjustment. Screw 2, cylinder head bolt 19, profile 7, T-shaped groove 18, left tightening handle 1, right tightening handle a9 and right tightening handle b11 to achieve, when the right end is traversing adjustment, first rotate the right tightening handle a9 Drive the inner and outer teeth screw 8 to adjust the position of the overall right gripping claw 22. After adjusting the overall position, turn the right tightening handle b11 to drive the long inner screw 10, and the long inner screw 10 then drives the clamping plate 12 to carry out the clamping of the sample. Precise adjustment. When the left end is adjusted horizontally, firstly rotate the left tightening handle 1 to drive the short inner screw 2, and the short inner screw 2 then drives the clamping plate 12 to clamp the sample;

The multi-angle adjustment function is realized by the inner slide plate 21, the outer slide plate 24, the upper chute 17, the lower chute 16, the short bolt 6 and the long bolt 5. The realization of the multi-angle adjustment function requires three steps. : Match the relative positions of the inner slide 21 and the outer slide 24 with the upper chute 17 and the lower chute 16, and adjust the positions of the inner slide 21 and the outer slide 24 along the chute according to the sample clamping requirements; the second step: place the The short bolt is connected with the threaded hole of the upper half of the outer sliding plate 24 through the inner sliding plate 21, and is screwed tightly, and the inner sliding plate 21 and the outer sliding plate 24 are fixed on the inner edge of the upper chute 17 and the lower chute 16; The bolts 5 are connected with the threaded holes in the lower half of the outer sliding plate 24 through the inner sliding plate 21 and the number of rotations of the long bolts 5 is adjusted according to the size of the sample to ensure that the sample is clamped.

According to the working principle, when the regular sample is clamped, the angle of the clamping plate 12 and the inner slide plate 21 and the outer slide plate 24 is adjusted according to the normal direction of the outline surface of the regular set to clamp the sample.

The working principle is to adjust the angle of the clamping plate 12 and the inner sliding plate 21 and the outer sliding plate 24 according to the normal direction of the tangent to a reasonable clamping point to clamp the sample when clamping the irregular sample.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (6)

1. a kind of irregular metallographic specimen polishing clamp, which is characterized in that including inside and outside tooth screw rod (8), holding plate (4) are assisted, Inner slider (21), outer slide plate (24), grip block (12), profile (7), T-slot (18), right gripper jaw (22), left gripper jaw (23) With shell (3)；The shell (3) is connect with auxiliary holding plate (4) by bolt (14)；The shell (3) is one rectangular Hollow cylinder；The profile (7) is a rectangle solid cylinder；Profile (7) quantity is two, and symmetrically cloth It sets on shell (3), profile (7) both ends are connected on the cylinder on the symmetrical side of shell (3) two, and pass through fastening bolt (15) Connection；The bottom of the profile (7) is provided with T-slot (18)；The profile (7) and cylinder head bolt (19) passes through T-slot (18) it connects；

The right gripper jaw (22) and left gripper jaw (23) is connect with profile (7) by cylinder head bolt (19) respectively；It is described Right gripper jaw (22) and left gripper jaw (23) it is symmetrical, and shape generally half rounded body, right gripper jaw (22) and a left side The two sides of gripper jaw (23) are provided with two symmetrical arcuation U-type grooves, and center is provided with and connect with inside and outside tooth screw rod (8) Threaded hole；The upper surface of the U-type groove, which is located inside and outside right gripper jaw (22) and left gripper jaw (23), is provided with upper hopper chute (17)；The lower surface of the U-type groove, which is located inside and outside right gripper jaw (22) and left gripper jaw (23), is provided with gliding groove (16)；It is connected between the upper hopper chute (17) and gliding groove (16) of the right gripper jaw (22) and left gripper jaw (23) in the inner part Inner slider (21) is connected between the upper hopper chute (17) and gliding groove (16) of right gripper jaw (22) and left gripper jaw (23) in the outer part Outer slide plate (24)；It is connected with lag bolt (6) and stay bolt from top to bottom between the inner slider (21) and outer slide plate (24) (5)；The end of the lag bolt (6) in the inner part has nut.

2. a kind of irregular metallographic specimen polishing clamp according to claim 1, it is characterised in that: the left gripper jaw (23) pass through interference fit connection with internal threaded column (13)；The internal threaded column (13) is connected through a screw thread with short inner screw (2)； The position of end in the inner part of the short inner screw (2) is connect with grip block (12) by clearance fit；The short inner screw (2) is leaned on The end in outside and left-handed tight handle (1) interference fit connect.

3. a kind of irregular metallographic specimen polishing clamp according to claim 1, it is characterised in that: the right gripper jaw (22) it is connect with inside and outside tooth screw rod (8) by clearance fit；The inside and outside tooth screw rod (8) is threadedly coupled with long inner screw (10), The inside and outside tooth screw rod (8) and tight handle a (9) interference fit of dextrorotation connect；The long inner screw (10) and the tight handle b of dextrorotation (11) interference fit connection；The long inner screw (10) is connect with grip block (12) by clearance fit.

4. a kind of irregular metallographic specimen polishing clamp according to claim 1, it is characterised in that: the left gripper jaw (23) it is connected and fixed with shell (3) by internal threaded column (13), short inner screw (2) and grip block (12) pass through clearance fit Connection.

5. a kind of irregular metallographic specimen polishing clamp according to claim 1, it is characterised in that: the right gripper jaw (22) it is flexibly connected by the threaded hole that inside and outside tooth screw rod (8) passes through shell (3) one end with shell (3) with shell (3).

6. a kind of irregular metallographic specimen polishing clamp according to claim 1, further includes sample (20), feature exists In: the sample (20) is placed between right gripper jaw (22) and left gripper jaw (23), and inner slider (21) and outer by being located at Stay bolt (5) and grip block (12) between slide plate (24) hold out against connection.