CN110935898A

CN110935898A - Numerical control machine tool clamp

Info

Publication number: CN110935898A
Application number: CN201911335729.3A
Authority: CN
Inventors: 刘芳; 徐国进; 张巧霞; 罗俊锋; 万小勇; 郭凤歧; 滕海涛; 李勇军
Original assignee: GRINM ADVANCED MATERIALS Co Ltd
Current assignee: GRINM ADVANCED MATERIALS Co Ltd; Grikin Advanced Material Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-03-31

Abstract

The invention belongs to the field of machining, and particularly relates to a numerical control machine tool clamp which comprises a movable chuck, a chassis, a positioning threaded hole, a T-shaped key, a tooth-shaped groove, a hydraulic movable clamping jaw and a main shaft. The movable chuck is provided with a fixed positioning step for fixing a product, three positioning threaded holes and two blind holes. The chassis comprises a fixed positioning step coupled with the movable chuck, a tooth-shaped groove coupled with the hydraulic movable clamping jaw, two through holes for mounting the T-shaped key and a threaded hole. The rotation of the chassis main shaft can drive the chassis and the movable chuck to move. The chassis is coupled with one or more movable chucks, and the fixed positioning steps can be processed into different dimensions according to the sizes of products so as to adapt to different products. The invention has more accurate horizontal positioning and axial positioning, improves the machining precision, improves the working efficiency of installation and disassembly, improves the safety factor, and has simpler tool structure and lower cost.

Description

Numerical control machine tool clamp

Technical Field

The invention relates to a die machining tool, in particular to a numerical control machine tool clamp, and belongs to the technical field of machining.

Background

In the course of working of disk part and product, digit control machine tool is the indispensable machining method in the finish machining process, and digit control machine tool fixture of prior art adopts movable chuck and lathe removal jack catch cooperation usually, and the installation comes the position of confirming movable chuck according to the number of teeth on chassis, and installation and dismantlement time are longer, are difficult to guarantee high dimensional accuracy and position accuracy moreover, can't satisfy the processing of high accuracy product and high performance product. Therefore, the invention provides a numerical control machine tool clamp to solve the technical difficulties of inaccurate positioning, complex and time-consuming disassembly and assembly operation and the like of the existing numerical control machine tool.

Disclosure of Invention

The invention aims to provide a numerical control machine tool fixture which comprises a movable chuck 1 and a chassis 3 coupled with a numerical control machine tool, wherein the movable chuck 1 is provided with three positioning threaded holes coupled with the chassis 3, two blind holes for mounting screw caps, a movable chuck fixing and positioning step II matched with the chassis 3 and a product fixing and positioning step I matched with the product size, and the chassis 3 comprises a chassis fixing and positioning step III coupled with the movable chuck 1, a tooth-shaped groove 4 coupled with a hydraulic moving clamping jaw 6, two through holes for mounting a T-shaped key 5 and a threaded hole.

Preferably, one movable chuck 1 can be used several times by modifying the size of the product fixing and positioning step i on the movable chuck 1.

Preferably, the chassis 3 can be coupled to one or more movable chucks 1.

Preferably, the height and diameter of the product fixing and positioning step I on the movable chuck 1 are determined according to the size of the product.

Preferably, the chuck fixing and positioning step II and the chassis fixing and positioning step III are arc-shaped or linear, and surface contact is formed between the chuck fixing and positioning step II and the chassis fixing and positioning step III.

Preferably, the edges of the chuck fixing and positioning step II, the chassis fixing and positioning step III and the product fixing and positioning step I are arcs with radian of 0-90 degrees or chamfers with radian of 0-90 degrees. Preferably, external diameter dimension R1 of activity chuck 1 is 325mm, and wherein the contained angle J1 of two screw thread locating holes 2 is 40 °, the excircle diameter D4 of screw thread locating hole 2 is 14mm, the screw hole on the activity chuck 1 and the hole center collineation of the screw thread locating hole 2 on the chassis 3, screw hole excircle diameter D4 on the activity chuck 1 with the excircle diameter D9 of screw thread locating hole 2 is the same, and the size is 14 mm.

Preferably, the removable chuck 1 also has a plurality of discharge ports to facilitate the discharge of waste fluids during processing.

Preferably, the chassis 3 is provided with two through holes for installing the T-shaped key 5, the diameter D6 of the two through holes is the same as D8, the two through holes are both 22mm, the T-shaped key 5 is used for fastening the chassis 3 and the spindle 7, and the chassis 3 moves along with the movement of the spindle 7 through the connection of the T-shaped key 5.

Preferably, the chassis 3 and the tooth-shaped groove 4 are fixed into a whole, the included angle J2 between adjacent teeth in the tooth-shaped groove 4 is 60 degrees, the length T5 of the single tooth width is 5mm, and the tooth height H7 is 2 mm.

The numerical control machine tool clamp has the following beneficial effects:

(1) three-point positioning and step positioning are adopted to realize positioning and fixing, horizontal and axial accurate positioning can be realized, horizontal and axial positioning errors caused by two-point positioning of the movable chuck and the clamp are avoided, and the positioning tolerance can be limited to be below 0.05 mm;

(2) the chassis replaces a movable chuck, so that the overall height of the clamp is reduced, the center of gravity of a workpiece is reduced during processing, and the problem of unstable center of gravity of the workpiece is avoided;

(3) the clamp with the movable chuck matched with the chassis is adopted, so that the positioning is convenient, the assembly or disassembly is faster, and the efficiency is higher;

(4) the size of the positioning step of the movable chuck can be machined and modified to adapt to workpieces with different sizes, so that the re-machining cost is saved.

Drawings

Fig. 1 is an overall general assembly view of the numerical control machine tool jig of the present invention.

Fig. 2 is a plan view of a movable chuck in the numerical control machine tool jig of the present invention.

Fig. 3 is a left side view of a movable chuck in the numerical control machine tool jig of the present invention in full section.

Fig. 4 is a bottom view of the movable chuck in the numerical control machine tool jig of the present invention.

Fig. 5 is an overall structural view of a base plate in the numerical control machine tool jig of the present invention.

Fig. 6 is a front view of a base plate in the numerical control machine tool jig of the present invention.

Fig. 7 is a bottom view of a base plate in the numerical control machine tool jig of the present invention.

Fig. 8 is a left side view of a base plate in the numerical control machine tool jig of the present invention in full section.

FIG. 9 is a partial enlarged view of a tooth-shaped groove of a chassis in the numerical control machine tool holder according to the present invention.

Fig. 10 is an overall structural view of a T-shaped key in the numerical control machine tool holder of the present invention.

Fig. 11 is an overall structural view of a main shaft and a hydraulically moving jaw in the numerical control machine tool holder of the present invention.

The reference numbers in the figures are:

1-a movable chuck, 2-a positioning threaded hole, 3-a chassis, 4-a tooth-shaped groove, 5-a T-shaped key, 6-a hydraulic movable jaw and 7-a main shaft.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments and the directional terms described below with reference to the drawings are exemplary and intended to be used in the explanation of the invention, and should not be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In one broad embodiment of the invention, a clamp of a numerical control machine tool, as shown in fig. 1, comprises a movable chuck 1 and a base plate 3 coupled with the numerical control machine tool, wherein the movable chuck 1 and the base plate 3 are positioned through three positioning threaded holes 2. The chuck fixing and positioning step II of the movable chuck 1 is matched with the chassis fixing and positioning step III of the chassis 3 in size and shape, and the chassis 3 is connected with a spindle 7 of a numerical control machine tool through two T-shaped keys 5 in the hydraulic moving clamping jaw 6. The movable chuck 1 and the chassis 3 rotate along with the rotation of the main shaft 7. The size of the product fixing and positioning step I of the movable chuck 1 is determined according to the outer diameter size of the movable chuck 1 and the outer diameter size of a product, for example, for the product with the diameter of 524mm, three movable chucks 1 can be used for processing arc-shaped steps with the diameter of 524mm, the product is placed in the movable chuck 1, and the positions of the three movable chucks 1 are adjusted, so that the product can be ensured to be horizontal and coaxially rotate with the movable chuck 1 and the chassis 3.

According to the invention, the three positioning threaded holes 2 can ensure that the movable chuck 1 and the chassis 3 are firmly positioned and connected, and the contact area between the movable chuck 1 and the chassis 3 is large, so that the movable chuck does not shake.

In a further embodiment, the size and height of the fixed positioning step i on the movable chuck 1 are determined according to the product size.

The chassis 3 is used for replacing a traditional chuck in the prior art, the fixed positioning step I on the movable chuck 1 is used for determining the position of a product, and errors caused by the fact that the position of the product is determined by three chucks in the prior art can be avoided, so that machining errors caused by the fact that the axes of the product and the chassis 3 are inconsistent in the machining process are avoided.

The front plan view of the movable chuck 1 is shown in fig. 2, the outer diameter dimension R1 of the movable chuck 1 is 325mm, the movable chuck 1 with fixed positioning steps for different products in a certain size range can be processed, the chassis is fixed, and the products with different sizes can be processed only by replacing the movable chuck 1. The movable chuck 1 is provided with three threaded positioning holes 2, and the included angle between the two threaded positioning holes is J1 and is 40 degrees in the figure. Meanwhile, the movable chuck 1 is also provided with a plurality of discharge ports, so that waste liquid in processing can be conveniently discharged.

Product fixed position step I of activity chuck 1 is shown in fig. 3, and product fixed position step I's height is H3, and the size is 10mm, in order to prevent that the target blank side is impaired in the course of working, and product fixed position step I size is generally about 5mm than actual target blank diameter. The excircle diameter D4 of screw thread locating hole 2 is 14mm, and the screw hole on the activity chuck 1 and the screw hole center collineation on the chassis 3, excircle diameter D4 equal to the size of D9 on the chassis 3, and the size is 14mm, and the degree of depth H4 of screw cap, the size is 40mm, and the width of screw cap is the excircle diameter size of 1.5 times. The movable chuck 1 is provided with two blind holes, the specific positions of the blind holes are shown in fig. 4, the diameter D2 of the outer circle of each blind hole is 40mm and is larger than the size D6 of the screw cap, the distance size T2 of the two blind holes is 78mm, and the distance T1 from the center of the movable chuck 1 is 100 mm. The center lines of the two blind holes and the threaded positioning hole are on the same straight line. The chuck fixing and positioning step II is shown in figure 3. The excircle radius R4 of chuck fixed position step I is 200mm, and the height of step is the same with chassis fixed position step II's height, and length is 10 mm. The chassis fixing and positioning step III is shown in figure 8.

The sizes of the radiuses R3, R5 and R6 of the circular connection positions of the edges in the movable chuck 1 are respectively 40mm, 10mm and 40mm, and the connection positions are made into round corners so as to prevent damage caused by sharp corner angles in the process of disassembly and assembly.

Fig. 5 is an overall structural view of the chassis 3, the chassis 3 is provided with two through holes for mounting the T-shaped key 5 and three threaded holes having an outer diameter D4 of 14mm, and the bottom view of the chassis 3 is cut away to obtain a left side view fig. 8. Fig. 8 includes two identically sized through holes for mounting the T-key 5, D6 and D8 being 22mm in diameter. The diameter D9 of the threaded hole connecting the chassis 3 and the movable chuck 1 is 14mm in size. Fig. 7 shows a specific structure of the tooth-shaped groove 4 on the chassis 3. The groove width H9 of the tooth-shaped groove 4 is 65mm, the protruding height T4 of the clamping groove is 7mm, and the recessed height T3 is 10 mm. The specific structure of the teeth in the tooth-shaped groove 4 is shown in fig. 9, the included angle J2 between the teeth is 60 degrees, the length T5 of the single tooth width is 5mm, and the height H7 of the teeth is 2 mm.

The T-shaped key 5 is used for fastening the chassis 3 and the main shaft 7, the chassis 3 and the tooth-shaped groove 4 are fixedly designed in an integrated mode, and the chassis 3 moves along with the movement of the main shaft 7 through the connection of the T-shaped key 5. The overall structure of the T-shaped key 5 is shown in fig. 10. The overall structure of the hydraulically movable jaws 6 and the spindle 7 is schematically shown in fig. 11.

The specific dimensions of the numerically controlled machine tool fixture of the present invention are shown in the following table.

Item	Size of	Item	Size of
				R1(mm)	325	D2(mm)	40
R2(mm)	295	D3(mm)	44
				R3(mm)	40	D4(mm)	14
R4(mm)	200	D5(mm)	22

R5(mm)	10	D6(mm)	22
				R6(mm)	40	D7(mm)	32
H1(mm)	55	D8(mm)	22
				H2(mm)	25	D9(mm)	14
H3(mm)	10	T1(mm)	100
				H4(mm)	20	T2(mm)	78
H5(mm)	15	T3(mm)	10
				H6(mm)	25	T4(mm)	7
H7(mm)	2	T5(mm)	5
				H8(mm)	25	J1(°)	40
D1(mm)	245	J2(°)	60

In conclusion, the numerical control machine tool clamp disclosed by the invention can be quickly disassembled and accurately positioned horizontally and axially, the machining precision of a product is greatly improved, and the numerical control machine tool clamp has the advantages of simple and convenient structure, convenience in use, quickness and flexibility in operation, and the production efficiency is greatly improved; meanwhile, the numerical control machine tool clamp can be used for multiple times, is suitable for processing products with multiple sizes, and is time-saving, labor-saving and cost-saving.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a digit control machine tool anchor clamps, includes movable chuck (1) and chassis (3) with the coupling of digit control machine tool, its characterized in that: the movable chuck is characterized in that three positioning threaded holes coupled with the chassis (3), two blind holes for mounting screw caps, a movable chuck fixing and positioning step (II) matched with the chassis (3) and a product fixing and positioning step (I) matched with the product size are formed in the movable chuck (1), and the chassis (3) comprises a chassis fixing and positioning step (III) coupled with the movable chuck (1), a tooth-shaped groove (4) coupled with the hydraulic moving clamping jaw (6), two through holes for mounting the T-shaped key (5) and three threaded holes.

2. A numerical control machine tool holder according to claim 1, characterized in that a movable chuck (1) can be used several times by modifying the dimensions of the product holding and positioning step (i) on said movable chuck (1).

3. A numerical control machine tool holder according to claim 1, characterized in that the chassis (3) can be coupled with one or more removable chucks (1).

4. A numerically controlled machine tool clamp as claimed in any one of claims 1, characterized in that the height and diameter dimensions of the product-holding positioning step (i) on the removable chuck (1) are determined according to the dimensions of the product.

5. The numerical control machine tool fixture as claimed in claim 1, wherein the chuck fixing and positioning step (ii) and the chassis fixing and positioning step (iii) are arc-shaped or linear, and surface contact is formed between the two steps.

6. The numerical control machine tool clamp as claimed in claims 1 to 5, wherein the edges of the chuck fixing and positioning step (II), the chassis fixing and positioning step (III) and the product fixing and positioning step (I) are circular arcs with radian of 0-90 degrees or chamfers with 0-90 degrees.

7. The numerical control machine tool clamp according to claim 1, wherein the outer diameter dimension R1 of the movable chuck (1) is 325mm, the included angle J1 of two threaded positioning holes (2) is 40 degrees, the outer circle diameter D4 of the threaded positioning holes (2) is 14mm, the threaded holes in the movable chuck (1) are collinear with the hole centers of the threaded positioning holes (2) in the chassis (3), and the outer circle diameter D4 of the threaded holes in the movable chuck (1) is the same as the outer circle diameter D9 of the threaded positioning holes (2), and the outer diameter D9 of the threaded positioning holes (2) is 14 mm.

8. A numerical control machine tool holder according to claim 1, characterized in that the movable chuck (1) also has a plurality of discharge ports for facilitating the discharge of waste liquid during processing.

9. A numerical control machine tool holder according to claim 4, characterized in that the chassis (3) is provided with two through holes for installing T-shaped keys (5), the diameter D6 of the two through holes is the same as D8, and the two through holes are 22mm, the T-shaped keys (5) are used for fastening the chassis (3) and the spindle (7), and the chassis (3) moves along with the movement of the spindle (7) through the connection of the T-shaped keys (5).

10. The numerical control machine tool clamp as claimed in claim 1, wherein the chassis (3) and the tooth-shaped groove (4) are fixed into a whole, the included angle J2 between adjacent teeth in the tooth-shaped groove (4) is 60 degrees, the single tooth width length T5 is 5mm, and the tooth height H7 is 2 mm.