CN211029598U

CN211029598U - Workpiece fixing device of precision grinding machine

Info

Publication number: CN211029598U
Application number: CN201922160784.5U
Authority: CN
Inventors: 朱永长
Original assignee: Shanghai Zenghua Electronic Technology Co ltd
Current assignee: Shanghai Zenghua Electronic Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-17
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a workpiece fixing device of precision grinder, including the workstation, the top sliding connection objective table of workstation, the top fixed mounting work piece fixer of objective table, the locating hole has been seted up to work piece fixer's top central authorities, and the dispersing all around of locating hole is equipped with the spout, and the spout is seted up on work piece fixer, and the quantity of spout is four, the equal sliding connection piece of inside of spout, and the bottom of piece is located the spout, and the bottom of piece is run through and is provided with the screw rod, and beneficial effect is: this practicality is all around the locating hole and disperses the form and be equipped with four supporting parts, and conflict piece sliding connection is on the work piece fixer to through the rotatory propulsion of screw rod, consequently when the finding that polishes, can place the finding in the locating hole inboard, then four supporting parts of drive press from both sides the part tightly, compare the conventional art, this practicality can realize a fine fixed to the less work piece of size.

Description

Workpiece fixing device of precision grinding machine

Technical Field

The utility model particularly relates to a workpiece fixing device of precision grinder.

Background

Grinding machines are machine tools for grinding the surface of a workpiece by using grinding tools, most of which use a grinding wheel rotating at high speed for grinding, and a few of which use other grinding tools such as oilstone and abrasive belt and free abrasive, and are widely used in the field of production and manufacturing of mechanical workpieces. In the prior art, when a grinding machine is used for machining small parts (such as studs, rivets and the like), it is often found that a clamping mechanism on the grinding machine cannot ensure that the small parts are fixed very tightly, so that a workpiece is easy to skew in a grinding process, and the grinding precision is reduced. Consequently if there is a centre gripping fixed establishment, the work piece of adaptable not unidimensional and shape, the precision of polishing of work piece so will improve greatly has also reduced the substandard product disability rate of work piece simultaneously, for this reason, the utility model provides a workpiece fixing device of precision grinding machine solves above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide a workpiece fixing device of precision grinder to reach stable centre gripping, improve the purpose of the precision of polishing.

In order to achieve the above object, the utility model provides a following technical scheme: a workpiece fixing device of a precision grinding machine comprises a workbench, wherein the top end of the workbench is connected with an object stage in a sliding way, a workpiece fixer is fixedly arranged at the top end of the objective table, a positioning hole is arranged in the center of the top end of the workpiece fixer, sliding grooves are divergently arranged around the positioning hole and are arranged on the workpiece fixer, the number of the sliding chutes is four, the insides of the sliding chutes are all connected with the contact pieces in a sliding way, the bottoms of the contact pieces are positioned in the sliding chutes, and the bottom of the abutting piece is provided with a screw rod in a penetrating way, the inner end of the screw rod is rotationally connected with the inner end of the chute, the outer end of the sliding groove extends to the outside of the sliding groove and is fixedly connected with a rotating handle, the left side and the right side of the top end of the workpiece fixer are respectively welded with a positioning block, the inboard of locating piece all is equipped with the extruded article, the outside fixed mounting telescopic cylinder of locating piece, telescopic cylinder's piston rod tip run through the locating piece and with the inboard fixed connection of extruded article.

Preferably, polished rods are perpendicularly welded to two sides of one end, close to the positioning block, of the extrusion piece, through holes are formed in two sides of the positioning block in a penetrating mode, and the outer ends of the polished rods penetrate through the two through holes respectively.

Preferably, the bottom of extruded article is the rectangle form, and its top is trapezoidal form, and the installation cavity has been seted up to its bottom inboard, the inside embedding of installation cavity has the slip extrusion piece, the outside of slip extrusion piece is the arc form, and its inboard elastic connection is inside the installation cavity.

Preferably, the inner sides of the tops of the extrusion pieces are respectively provided with a non-slip mat in a fit manner, the non-slip mats are in a trapezoidal shape, and the thickness of the non-slip mats is smaller than that of the sliding extrusion pieces.

Preferably, the sliding grooves are uniformly distributed on the outer sides of the positioning holes, and the outer ends of the sliding grooves correspond to the four corners of the workpiece fixer respectively.

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

1. four abutting parts are arranged around the positioning hole in a divergent mode, the abutting parts are connected to the workpiece holder in a sliding mode and are pushed in through the rotation of the screw rod, so that when small parts are polished, the small parts can be placed on the inner side of the positioning hole, then the four abutting parts are driven to clamp the parts tightly, and compared with the traditional technology, the workpiece fixing device can well fix the workpieces with small sizes;

2. this practicality can place the work piece center in locating hole department when the great work piece of fixed dimension, then drives two extrusions centre gripping fixed work pieces through telescopic cylinder, and four conflict pieces of redriving after finishing assist fixedly, and the inboard of extrusion article is provided with slip extrusion piece and slipmat structure for prevent the work piece to remove, compare the conventional art, this practicality can all carry out a fine fixed effect to the work piece of various shapes and size, helps improving the precision of polishing of grinding machine.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the workpiece holder according to the present invention;

FIG. 3 is a sectional view of the workpiece holder according to the present invention;

fig. 4 is a schematic diagram of the structure of the extrusion piece of the present invention.

In the figure: the device comprises a working table 1, an object stage 2, a workpiece fixer 3, a positioning hole 4, a sliding chute 5, a contact part 6, a screw 7, a positioning block 8, an extrusion piece 9, a telescopic cylinder 10, a polish rod 11, a sliding extrusion piece 12 and a non-slip mat 13.

Detailed Description

Referring to fig. 1-4, the present invention provides a technical solution: a workpiece fixing device of a precision grinding machine comprises a workbench 1, wherein the top end of the workbench 1 is in sliding connection with an object stage 2, a workpiece holder 3 is fixedly installed at the top end of the object stage 2, a positioning hole 4 is formed in the center of the top end of the workpiece holder 3, sliding chutes 5 are formed in the periphery of the positioning hole 4 in a dispersing mode, the sliding chutes 5 are formed in the workpiece holder 3, the number of the sliding chutes 5 is four, the inner portion of each sliding chute 5 is in sliding connection with an abutting part 6, the bottom of each abutting part 6 is located in each sliding chute 5, a screw 7 penetrates through the bottom of each abutting part 6, the inner end of each screw 7 is rotatably connected to the inner end of each sliding chute 5, the outer end of each screw extends to the outer portion of each sliding chute 5 and is fixedly connected with a rotating handle, as shown in figure 1, each abutting part 6 is in sliding connection with the corresponding sliding chute 5 in a, the clamping device is used for clamping and loosening a workpiece, and meanwhile, the front end of the contact piece 6 is sharp, so that the clamping device is particularly suitable for clamping workpieces with small sizes.

The equal welding in the top left and right sides of work piece holder 3 is equipped with locating piece 8, the inboard of locating piece 8 all is equipped with extruded article 9, the outside fixed mounting telescopic cylinder 10 of locating piece 8, telescopic cylinder 10's piston rod tip run through locating piece 8 and with the inboard fixed connection of extruded article 9, can drive extruded article 9 through telescopic cylinder 10 promptly and remove, and extruded article 9 highly be far greater than the thickness of supporting part 6, extruded article 9 only slides along width one side of workstation 1 all the time.

The equal vertical welding in one end both sides that extruded article 9 is close to locating piece 8 is equipped with polished rod 11, and the both sides of locating piece 8 are all run through and have been seted up the through-hole, and the outer end of polished rod 11 runs through respectively in two through-holes, as shown in fig. 2, and extruded article 9 sliding connection is inboard at locating piece 8 promptly.

The bottom of extruded article 9 is the rectangle form, and its top is the trapezoidal form, and the installation cavity has been seted up to its bottom inboard, and the inside embedding of installation cavity has the extrusion piece 12 that slides, and the outside of extrusion piece 12 that slides is the arc form, and its inboard elastic connection is inside the installation cavity, and the extrusion piece 12 that slides promptly can stretch out and draw back in the inside of installation cavity, and the shape of extrusion piece 12 that slides is like figure 4, its outer end is the arc form for adapt to curved surface work piece.

The top inboard of extruded piece 9 all laminates and is equipped with slipmat 13, and slipmat 13 is trapezoidal form, and its thickness is less than the thickness of slip extrusion piece 12, and slipmat 13 is made for the rubber material, has certain elasticity and great friction.

The sliding chutes 5 are uniformly distributed on the outer sides of the positioning holes 4, the outer ends of the sliding chutes 5 correspond to four corners of the workpiece holder 3, and the distribution shapes of the sliding chutes 5 are shown in fig. 2.

The working principle is as follows: the utility model discloses when using, will wait to polish in the locating hole 4 of little work piece on work piece fixer 3, then four manually-rotated screw rods 7, drive conflict piece 6 utilizes the inner of four conflict pieces 6 to extrude simultaneously on the work piece surface all around for fixed work piece. When the work piece volume that needs the centre gripping to fix is great and irregular, only utilize conflict piece 6 to be difficult to realize fixedly, then usable telescopic cylinder 10 this moment, control extruded article 9 inward movement, utilize about two extruded articles 9 press from both sides tight work piece simultaneously, after finishing, four piece conflict pieces 6 of redriving assist and press from both sides tight work piece, avoid when the work piece is polished, its position takes place to remove. Wherein the bottom inboard of extruded piece 9 is equipped with slip extrusion piece 12, and the inboard laminating in top of extruded piece 9 is equipped with slipmat 13, and the two effect improves the inboard friction of extruded piece 9 and knows, the supplementary fixed work piece to improve the accuracy of polishing of work piece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a workpiece fixing device of precision grinder, includes workstation (1), its characterized in that: the top end of the workbench (1) is in sliding connection with the objective table (2), the top end of the objective table (2) is fixedly provided with a workpiece holder (3), the top end center of the workpiece holder (3) is provided with a positioning hole (4), the periphery of the positioning hole (4) is divergently provided with sliding chutes (5), the sliding chutes (5) are arranged on the workpiece holder (3), the number of the sliding chutes (5) is four, the inner part of each sliding chute (5) is in sliding connection with the abutting part (6), the bottom of each abutting part (6) is positioned in each sliding chute (5), the bottom of each abutting part (6) is provided with a screw rod (7) in a penetrating manner, the inner end of each screw rod (7) is rotatably connected to the inner end of each sliding chute (5), the outer end of each screw rod extends to the outer part of each sliding chute (5) and is fixedly connected with a rotating handle, and the left side and the right side, the inboard of locating piece (8) all is equipped with extruded article (9), outside fixed mounting telescopic cylinder (10) of locating piece (8), the piston rod tip of telescopic cylinder (10) run through locating piece (8) and with the inboard fixed connection of extruded article (9).

2. The workpiece holding device for a precision grinding machine as claimed in claim 1, wherein: the one end both sides that extruded article (9) are close to locating piece (8) all weld perpendicularly and be equipped with polished rod (11), the both sides of locating piece (8) all run through and have seted up the through-hole, the outer end of polished rod (11) runs through respectively in two through-holes.

3. The workpiece holding device for a precision grinding machine as claimed in claim 1, wherein: the bottom of extruded article (9) is the rectangle form, and its top is the trapezoidal form, and the installation cavity has been seted up to its bottom inboard, the inside embedding of installation cavity has slide extrusion piece (12), the outside of slide extrusion piece (12) is the arc form, and its inboard elastic connection is inside the installation cavity.

4. The workpiece holding device for a precision grinding machine as claimed in claim 1, wherein: the top inner side of the extrusion piece (9) is provided with a non-slip mat (13) in a fitting manner, the non-slip mat (13) is in a trapezoidal shape, and the thickness of the non-slip mat is smaller than that of the sliding extrusion piece (12).

5. The workpiece holding device for a precision grinding machine as claimed in claim 1, wherein: the sliding grooves (5) are uniformly distributed on the outer sides of the positioning holes (4), and the outer ends of the sliding grooves (5) correspond to the four corners of the workpiece fixer (3) respectively.