CN211220248U

CN211220248U - Numerical control grinding machine tool with clamping mechanism

Info

Publication number: CN211220248U
Application number: CN201921791371.0U
Authority: CN
Inventors: 李敏; 费友清
Original assignee: Changzhou Xinheli Precision Machinery Co ltd
Current assignee: Changzhou Xinheli Precision Machinery Co ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-08-11
Anticipated expiration: 2029-10-23

Abstract

The utility model discloses a numerical control grinding machine tool with a clamping mechanism, belonging to the technical field of numerical control grinding machine tools, which has the key points of the technical proposal that the numerical control grinding machine tool comprises a grinding table, wherein the grinding table is provided with a grinding wheel, an axial clamping mechanism and a radial clamping mechanism; the axial clamping mechanism comprises a first clamping table and a second clamping table, the first clamping table is rotatably connected with a first pressing piece, and the second clamping table is rotatably connected with a second pressing piece; the radial clamping mechanism comprises a fixed frame and a clamping assembly, the clamping assembly comprises a U-shaped frame, one end of the U-shaped frame is fixedly provided with a pressing cylinder, the other end of the U-shaped frame is fixedly provided with a third pressing piece, and a piston rod of the pressing cylinder is fixedly provided with a fourth pressing piece; and rolling parts are respectively arranged on the opposite surfaces of the third pressing part and the fourth pressing part. The utility model discloses have the stability that easily improves in the work piece course of working, and then improve the effect of work piece grinding precision.

Description

Numerical control grinding machine tool with clamping mechanism

Technical Field

The utility model belongs to the technical field of numerical control grinding machine tool technique and specifically relates to a numerical control grinding machine tool with fixture is related to.

Background

Grinding is one of the widely used material removal methods, belongs to one of the mechanical workpiece finish machining processes, and is generally realized by a grinding machine tool.

Chinese patent publication No. CN203124867U discloses a face gear numerically controlled grinding machine, which comprises a bed body, a shield, a motor, a control box, and a grinding wheel, wherein the bed body is provided with the shield and a main spindle box, a speed change mechanism is arranged in the main spindle box, the speed change mechanism is connected with the motor, a main spindle connected with the speed change mechanism extends out of the main spindle box and is connected with the grinding wheel, the bed body is provided with a slide way, a clamp is arranged on the slide way, and driving mechanisms of the motor and a speed change fork of the speed change mechanism are both connected with the control box.

When the existing numerical control grinding machine tool is used, the clamping devices clamp two ends of a workpiece, so that the axial stability of the workpiece is improved, but when the grinding wheel grinds the workpiece, the workpiece is stressed and is easy to shake in the radial direction, and the precision of workpiece grinding is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a numerical control grinding lathe with fixture, it has the stability that easily improves in the work piece course of working, and then improves the effect of work piece grinding precision.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a numerical control grinding machine tool with a clamping mechanism comprises a grinding table, wherein a grinding wheel and an axial clamping mechanism are arranged on the grinding table, the axial clamping mechanism comprises a first clamping table and a second clamping table, one surface, close to the second clamping table, of the first clamping table is rotatably connected with a first pressing piece through a driving motor, one surface, close to the first clamping table, of the second clamping table is rotatably connected with a second pressing piece through a driving air cylinder, and the second pressing piece is rotatably connected with a piston rod of the driving air cylinder; the grinding table is further provided with a radial clamping mechanism, the radial clamping mechanism comprises a fixed frame and a clamping assembly, one end of the fixed frame is connected with the grinding table, the other end of the fixed frame is connected with the clamping assembly, the clamping assembly is located between the first pressing piece and the second pressing piece, and the clamping assembly is arranged in the vertical direction; the clamping assembly comprises a U-shaped frame, a pressing cylinder is fixed at one end of the U-shaped frame, a third pressing piece is fixed at the other end of the U-shaped frame, and a fourth pressing piece is fixed on a piston rod of the pressing cylinder; and rolling parts are respectively arranged on the opposite surfaces of the third pressing part and the fourth pressing part.

By adopting the technical scheme, when the grinding wheel grinds the workpiece, the first pressing piece and the second pressing piece are easy to axially clamp the workpiece, and the third pressing piece and the fourth pressing piece are easy to radially clamp the workpiece, so that the clamping points of the workpiece are increased, the stability of the workpiece in the grinding process is easy to improve, and the effect of improving the grinding precision of the workpiece is achieved. After the first pressing piece and the second pressing piece clamp the workpiece, the workpiece is easily driven to rotate through the rotation of the driving motor, and meanwhile, the rolling pieces on the third pressing piece and the fourth pressing piece are easy to rotate relative to each other between the workpiece and the radial clamping mechanism, so that the workpiece grinding effect is improved.

The utility model discloses further set up to, the third compress tightly the piece with the fourth compresses tightly the piece and is the V type, just the third compresses tightly the V type opening orientation of piece the fourth compresses tightly the piece, the fourth compresses tightly the V type opening orientation of piece the third compresses tightly the piece.

Through adopting above-mentioned technical scheme, the third of V type compresses tightly the piece and the fourth compresses tightly the piece and easily radially fixture adaptation multiple different diameters' work piece, has widened the machining range of numerical control grinding machine in this scheme.

The utility model discloses further set up to, first grip slipper with the second grip slipper with the grinding platform slides and connects.

Through adopting above-mentioned technical scheme, easily the work piece of multiple different length of axial fixture adaptation is had with the first grip slipper and the second grip slipper that the grinding platform slided and is connected, has further widened the machining range of numerical control grinding machine in this scheme.

The utility model is further arranged in such a way that one end of the first pressing piece, which is far away from the first clamping table, is set to be a cone with a tip part far away from the first clamping table, and one end of the second pressing piece, which is far away from the second clamping table, is set to be a cone with a tip part far away from the second clamping table; and inserting holes matched with the tip parts of the first pressing piece and the second pressing piece are formed in two ends of the workpiece to be ground.

Through adopting above-mentioned technical scheme for the first tip that compresses tightly piece and second compresses tightly the piece easily inserts in the spliced eye of work piece, and forms some centre gripping with the work piece, easily reduces the influence that centrifugal force caused to the work piece, and simultaneously, easily first piece and the second of compressing tightly keep more excellent concentricity, thereby easily axial fixture plays the effect of stabilizing the centre gripping to the work piece.

The utility model is further arranged that a sliding rod is fixed on the grinding table, and the fixed frame is relatively fixed with the sliding rod through a locking piece; the locking piece including set up in sliding seat on the mount, threaded connection has clamp bolt on the sliding seat, clamp bolt with the slide bar butt.

Through adopting above-mentioned technical scheme, when clamp bolt is in the state of unscrewing, the mounting bracket easily realizes the effect that slides on the slide bar through the seat that slides, when radial fixture displacement to the position that the user needs, easily plays the locking effect to radial fixture through clamp bolt's the tightening. Through the displacement of the fixing frame, the radial clamping mechanism is easy to adapt to workpieces with different lengths.

The utility model discloses further set up to, follow on the slide bar the spout has been seted up to the length direction of slide bar, slide be provided with on the seat with the spout complex slider that slides.

Through adopting above-mentioned technical scheme, through the cooperation of slider and spout, when being difficult for influencing the mounting bracket and realizing its effect of sliding to, easily improve the stability of being connected between mounting bracket and the slide bar.

The utility model discloses further set up to, the first center pin that compresses tightly with the second compresses tightly the center pin collineation setting of piece.

By adopting the technical scheme, the force of the axial clamping mechanism acting on the workpiece can be balanced easily, and the workpiece can be clamped stably in the axial direction by the axial clamping mechanism easily.

The utility model discloses further set up to, the third compress tightly the center pin of piece with the fourth compresses tightly the center pin collineation setting of piece.

By adopting the technical scheme, the force of the radial clamping mechanism acting on the workpiece is balanced, so that the radial clamping mechanism can realize stable clamping effect on the workpiece in the axial direction.

To sum up, the utility model discloses following beneficial effect has:

1. through the setting of axial fixture and radial fixture, can play axial and radial tight effect of clamp to the work piece simultaneously, easily improve the stability of work piece grinding in-process to play the effect that improves work piece grinding precision.

2. Through the setting that third compresses tightly the piece and the fourth compresses tightly the piece for the V type, easily radial fixture adapts to the work piece of multiple different diameters.

3. Through the arrangement that the first clamping table and the second clamping table are connected with the grinding table in a sliding mode, the axial clamping mechanism is easy to adapt to workpieces with different lengths.

4. Through the arrangement of the sliding rod, the sliding seat and the pressing bolt, the radial clamping mechanism is easy to adapt to workpieces with different lengths.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural view of the axial clamping mechanism in the embodiment.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.

Fig. 5 is a schematic structural view of the radial clamping mechanism in the present embodiment.

Fig. 6 is a partially enlarged schematic view of a portion C in fig. 5.

Fig. 7 is a partially enlarged schematic view of a portion D in fig. 6.

In the figure, 1, bed body; 2. a control box; 3. a grinding table; 4. a grinding wheel; 5. an axial clamping mechanism; 51. a first clamping table; 511. a first pressing member; 512. a drive motor; 52. a second clamping table; 521. a second pressing member; 522. a driving cylinder; 6. a radial clamping mechanism; 61. a fixed mount; 62. a clamping assembly; 621. a U-shaped frame; 622. a pressing cylinder; 623; a third pressing member; 624. a fourth compression member; 625. a rolling member; 7. a slide bar; 71. a locking member; 711. A sliding seat; 7111. a slider; 712. a hold-down bolt; 72. a chute; 8. a workpiece; 81. and (7) inserting holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the numerical control grinding machine with the clamping mechanism disclosed in this embodiment includes a bed body 1, a control box 2 is electrically connected to the bed body 1 and an external power supply, and a grinding table 3 serving as a main grinding station is arranged on the bed body 1. The grinding table 3 is rotatably connected with a grinding wheel 4 used for grinding a workpiece 8, and the table top of the grinding table 3 is further provided with an axial clamping mechanism 5 and a radial clamping mechanism 6 which are used for achieving the clamping effect on the workpiece 8 in the grinding process of the workpiece 8, so that the grinding wheel 4 can conveniently and effectively grind the workpiece 8.

Referring to fig. 3 and 4, the axial clamping mechanism 5 includes a first clamping table 51 and a second clamping table 52, and the first clamping table 51 and the second clamping table 52 both use a sliding table cylinder slidably connected to the upper surface of the grinding table 3. One side of the first clamping table 51 close to the second clamping table 52 is rotatably connected with a first pressing piece 511 through a driving motor 512, one side of the second clamping table 52 close to the first clamping table 51 is rotatably connected with a second pressing piece 521, the central shaft of the second pressing piece 521 and the central shaft of the first pressing piece 511 are arranged in a collinear mode, the workpiece 8 is convenient to be stressed uniformly under the clamping effect of the first pressing piece 511 and the second pressing piece 521, and the stability of the axial clamping mechanism 5 in clamping the workpiece 8 can be improved. When the first clamping table 51 and the second clamping table 52 slide and approach along the grinding table 3, the clamping effect on workpieces 8 with different lengths is easily achieved, the driving motor 512 is used for driving the workpieces 8 to rotate on the axial clamping mechanism 5, and the grinding efficiency of the workpieces 8 is improved.

Referring to fig. 4, a driving cylinder 522 is fixed at the top of the second clamping table 52, and a piston rod of the driving cylinder 522 is rotatably connected with the second pressing member 521 through a bearing, so that the second pressing member 521 can easily rotate and be connected with the second clamping table 52. Meanwhile, by extending the piston rod of the driving cylinder 522, the distance between the first pressing member 511 and the second pressing member 521 can be easily finely adjusted, and the first pressing member 511 and the second pressing member 521 can more easily clamp the workpiece 8.

Referring to fig. 4, an end of the first pressing member 511 remote from the first holding stage 51 has a conical shape, and a tip of the conical shape is remote from the first holding stage 51. The end of the second pressing member 521 away from the second holding stage 52 is conical, and the tip of the conical shape is away from the second holding stage 52. During grinding, the partial conical shape of the first pressing piece 511 and the partial conical shape of the second pressing piece 521 are inserted into the insertion hole 81 which is pre-formed in the workpiece 8 to be ground, so that point clamping is formed between the first pressing piece 511 and the workpiece 8 and between the second pressing piece 521 and the workpiece 8, the influence of centrifugal force on the workpiece 8 is reduced, the first pressing piece 511 and the second pressing piece 521 can easily keep better concentricity, and the axial clamping mechanism 5 can more easily achieve the effect of stably clamping the workpiece 8.

Referring to fig. 5 and 6, the radial clamping mechanism 6 includes a fixed frame 61, one end of the fixed frame 61 is connected to the grinding table 3, and the other end is connected to a clamping assembly 62, and the clamping assembly 62 is located between the first pressing member 511 and the second pressing member 521. The clamping assembly 62 comprises a U-shaped frame 621 welded with the fixed frame 61, one end of the U-shaped frame 621 is fixed with a pressing cylinder 622 through a bolt, the other end of the U-shaped frame 621 is welded close to the pressing cylinder 622 or is fixed with a third pressing piece 623 through a bolt, a piston rod of the pressing cylinder 622 is welded or is fixed with a fourth pressing piece 624 through a bolt, and the third pressing piece 623 and the fourth pressing piece 624 are symmetrically arranged, so that central axes of the third pressing piece 623 and the fourth pressing piece 624 are collinear, uniform stress of the workpiece 8 under the clamping action of the third pressing piece 623 and the fourth pressing piece 624 is facilitated, and the clamping stability of the radial clamping assembly 62 on the workpiece 8 is improved. By means of the extension of the piston rod of the driving cylinder 522, the third pressing piece 623 and the fourth pressing piece 624 are close to each other, and the workpiece 8 is easily clamped in the radial direction. Rolling members 625 (see fig. 7) are embedded in the opposite surfaces of the third pressing member 623 and the fourth pressing member 624, and the rolling members 625 can be balls, so that the workpiece 8 and the radial clamping mechanism 6 can rotate relatively easily, and the grinding wheel 4 can grind the workpiece 8 conveniently.

Referring to fig. 6, a sliding rod 7 is welded or bolted to the grinding table 3 along the longitudinal direction of the grinding table 3, and the fixed frame 61 is fixed to the sliding rod 7 by a locking member 71. The locking piece 71 comprises a sliding seat 711 integrally arranged at one end of the fixed frame 61 close to the grinding table 3, the sliding seat 711 is in interactive socket joint with the sliding rod 7, a pressing bolt 712 is in threaded connection with the sliding seat 711, and the pressing bolt 712 is abutted to the sliding rod 7. Through the unscrewing of clamp bolt 712, easily mount 61 slides along slide bar 7, through the screwing up of clamp bolt 712, easily mount 61 realizes the locking effect to be convenient for radial fixture 6 plays the effect of effective clamp to the work piece 8 of different length. In order to improve the stability of connection between the fixed frame 61 and the sliding rod 7, the sliding rod 7 is provided with a sliding groove 72 along the length direction thereof, the sliding seat 711 is integrally provided with a sliding block 7111 which is matched with the sliding groove 72 in an embedded manner, and the circumferential rotation of the sliding seat 711 along the sliding rod 7 is reduced.

Referring to fig. 6, the third and fourth

pressing members

623, 624 are V-shaped, and the V-shaped openings of the third and fourth

pressing members

623, 624 are oppositely arranged, so that the third and fourth

pressing members

623, 624 can easily accommodate workpieces 8 of various diameters.

The implementation principle of the above embodiment is as follows: when the numerical control grinding machine tool with the clamping mechanism in the embodiment is used for grinding the workpiece 8, the axial clamping mechanism 5 clamps the workpiece 8 along the axial direction of the workpiece 8 by using the inserting hole 81, and drives the workpiece 8 to rotate by using the driving motor 512, and meanwhile, the radial clamping mechanism 6 clamps the workpiece 8 along the vertical direction from the radial direction of the workpiece 8, so that the workpiece 8 is clamped in the axial direction and the radial direction simultaneously, and the grinding wheel 4 is convenient for grinding the workpiece 8.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a numerical control grinding machine tool with fixture, includes grinding table (3), be provided with emery wheel (4) and axial fixture (5), its characterized in that on grinding table (3): the axial clamping mechanism (5) comprises a first clamping table (51) and a second clamping table (52), one surface, close to the second clamping table (52), of the first clamping table (51) is rotatably connected with a first pressing piece (511) through a driving motor (512), one surface, close to the first clamping table (51), of the second clamping table (52) is rotatably connected with a second pressing piece (521) through a driving cylinder (522), and the second pressing piece (521) is rotatably connected with a piston rod of the driving cylinder (522);

the grinding table (3) is further provided with a radial clamping mechanism (6), the radial clamping mechanism (6) comprises a fixed frame (61) and a clamping assembly (62), one end of the fixed frame (61) is connected with the grinding table (3), the other end of the fixed frame is connected with the clamping assembly (62), the clamping assembly (62) is located between the first pressing piece (511) and the second pressing piece (521), and the clamping assembly (62) is arranged along the vertical direction; the clamping assembly (62) comprises a U-shaped frame (621), a pressing cylinder (622) is fixed at one end of the U-shaped frame (621), a third pressing piece (623) is fixed at the other end of the U-shaped frame (621), and a fourth pressing piece (624) is fixed on a piston rod of the pressing cylinder (622); and rolling parts (625) are respectively arranged on the opposite surfaces of the third pressing part (623) and the fourth pressing part (624).

2. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: the third pressing piece (623) and the fourth pressing piece (624) are V-shaped, the V-shaped opening of the third pressing piece (623) faces the fourth pressing piece (624), and the V-shaped opening of the fourth pressing piece (624) faces the third pressing piece (623).

3. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: the first clamping table (51) and the second clamping table (52) are connected with the grinding table (3) in a sliding mode.

4. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: one end of the first pressing piece (511) far away from the first clamping table (51) is set to be a conical shape with the tip part far away from the first clamping table (51), and one end of the second pressing piece (521) far away from the second clamping table (52) is set to be a conical shape with the tip part far away from the second clamping table (52); the two ends of the workpiece (8) to be ground are provided with plug-in holes (81) matched with the tip parts of the first pressing piece (511) and the second pressing piece (521).

5. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: a sliding rod (7) is fixed on the grinding table (3), and the fixed frame (61) is relatively fixed with the sliding rod (7) through a locking piece (71); the locking piece (71) comprises a sliding seat (711) arranged on the fixed frame (61), a pressing bolt (712) is connected to the sliding seat (711) in a threaded mode, and the pressing bolt (712) is abutted to the sliding rod (7).

6. The numerically controlled grinding machine with a clamping mechanism according to claim 5, wherein: a sliding groove (72) is formed in the sliding rod (7) along the length direction of the sliding rod (7), and a sliding block (7111) in sliding fit with the sliding groove (72) is arranged on the sliding seat (711).

7. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: the central axis of the first pressing member (511) and the central axis of the second pressing member (521) are arranged in line.

8. The numerically controlled grinding machine with a clamping mechanism according to claim 1, wherein: the central axis of the third pressing member (623) and the central axis of the fourth pressing member (624) are arranged in line.