Novel clamping device for numerical control lathe

Abstract

A novel clamping device for a numerical control lathe comprises a base body, a base is arranged in the center of the base body, at least two through holes are formed in the outer circumference of the base body, two radial sliding rail grooves are formed in the through holes in the axis direction of the base body, a movable seat is connected with the base body through the sliding rail grooves formed in the surface, and the movable seat moves in the radial direction of the base body. And the workpiece is subjected to the action of axial force while the shaft part is clamped. A movable seat is connected with a base body through a sliding rail groove formed in the surface of the movable seat; a sliding rail is arranged in the movable seat, a sliding rail groove is formed in the surface of the trapezoidal sliding block, and the sliding block is connected with the movable seat through the sliding rail; the clamping jaw is fixedly connected to the bottom of the trapezoidal sliding block; the movable base moves in the radial direction of the base body, the shaft part is clamped, meanwhile, a workpiece is subjected to the action of axial force, and it is guaranteed that the end face of the machined workpiece is tightly attached to the clamping device.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe field, especially the clamping device for numerical control lathe with higher axial positioning requirement to the workpiece. BACKGROUND

[0002] When the shaft parts are processed on the lathe, the shaft special clamping device is needed to position the shaft parts needed to be processed. The clamping device used in the current production mainly guarantees the runout of the outer diameter of the workpiece and the center axis. The force received by the workpiece when clamped is only radial, and it is impossible to clamp some workpieces with special requirements. For example, when the end face of the workpiece needs to be closely attached to the clamping device, that is, the workpiece needs to be subjected to axial force when clamped. In order to effectively meet the actual production needs, it is necessary to improve the existing clamping device. SUMMARY

[0003] The technical problem to be solved by the utility model is that the existing clamping device cannot clamp some workpieces with special requirements, and a new type of clamping device for numerical control lathe is proposed.

[0004] The technical scheme of the utility model is as follows:

[0005] A new type of clamping device for numerical control lathe, comprising a base body, a base is arranged at the center of the base body, the outer circumference of the base body has at least two through holes, two radial sliding rail grooves are arranged in the through holes along the axis direction of the base body, a movable seat is connected with the base body through the sliding rail grooves arranged on the surface of the movable seat, the movable seat moves along the radial direction of the base body, and the shaft part clamping is realized at the same time, so that the workpiece is subjected to the action of axial force.

[0006] The base is a flange structure, an assembly hole is arranged on the flange bottom disc, and a circular protrusion is arranged in the middle of the flange bottom disc.

[0007] The base body is a circular ring structure, through holes are arranged on the outer circumference of the base body, two radial base sliding rail grooves are arranged in the through holes along the axis direction of the base body, L-shaped platforms are arranged on both sides of the base body circular through hole, and a taper hole is arranged in the middle of the L-shaped platform.

[0008] The width direction of the movable seat is provided with a first sliding rail, a trapezoidal hole is arranged in the movable seat, the inclined surface of the trapezoidal hole is provided with a second sliding rail, a conical hole and a straight slot are arranged in the length direction of the movable seat; in use, the first sliding rail is tightly matched with the base sliding rail groove in the through hole in the circumferential direction of the base body.

[0009] The cross section shape of the first sliding rail and the second sliding rail is S-shaped.

[0010] The trapezoidal slide is internally provided with a trapezoidal hole, and the trapezoidal slide is in cooperation with the trapezoidal hole in the movable seat; the slope of the trapezoidal slide is provided with a slide rail groove, and the two side surfaces of the trapezoidal slide are provided with inclined slot openings; the slide rail groove is in cooperation with the second slide rail on the movable seat during use.

[0011] The movable seat is connected with the base body through the slide rail groove arranged on the surface; the movable seat is internally provided with a slide rail, and the trapezoidal slide is provided with a slide rail groove; the slide block is connected with the movable seat through the slide rail; the clamping jaw is fixedly connected to the bottom of the trapezoidal slide; the movable seat is moved along the radial direction of the base body, the workpiece is subjected to the axial force during clamping of the shaft part, and the machined end surface is tightly combined with the clamping device. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a three-dimensional structure schematic view of the utility model;

[0013] Figure 2 is a structure schematic view of the base body;

[0014] Figure 3 is a structure schematic view of the movable seat;

[0015] Figure 4 is a structure schematic view of the trapezoidal slide;

[0016] Figure 5 is a structure schematic view of the clamping jaw;

[0017] Figure 6 is a top view of the base body;

[0018] Figure 7 is a structure schematic view of the base body. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] As Figure 1As shown in the figure, a new type of clamping device for numerical control lathe, comprising: movable seat 1, trapezoidal slider 2, jaw 3, base 4, base 5, small taper pin 6, large taper pin 7 and fastening bolt 8. The base 4 is a circular ring structure, and the base 5 is arranged at the center of the base 4. The outer circumference of the base 4 has at least two through holes, and two radial slide rail grooves are arranged in the through holes along the axis direction of the base. The movable seat 1 is connected with the base 4 through the slide rail grooves arranged on the surface. In this way, the movable seat 1 can move along the radial direction of the base 4, so that the shaft parts can be clamped and the workpiece is subjected to axial force at the same time.

[0021] As shown in the figure, Figure 7 The base 5 is a flange structure, and an assembly hole 5-2 is arranged on the flange bottom plate. The base 5 and the base 4 are assembled through the fastening bolt 8. The middle part of the flange bottom plate is provided with a circular protrusion 5-1, and the end surface flatness of the circular protrusion 5-1 is not greater than 0.003 mm. The height of the circular protrusion 5-1 is determined by the machined part, and the purpose is to ensure that the end surface of the machined part is in close contact with the end surface of the circular protrusion under the condition of effective clamping.

[0022] As shown in the figure, Figure 6 The base 4 is a circular ring structure, and three through holes are arranged on the outer circumference of the base 4. Two radial base slide rail grooves 4-1 are arranged in the through holes along the axis direction of the base. L-shaped platforms 4-2 are arranged on both sides of the base circumference through hole, and a taper hole 4-3 is arranged in the middle of the L-shaped platform 4-2.

[0023] As shown in the figure, Figure 2 , Figure 3 The movable seat 1 is a polygonal structure as a whole, and the number of installation and use is 3. A first slide rail 1-1 is arranged in the width direction of the movable seat 1. A trapezoidal hole 1-5 is arranged in the movable seat 1. The inclined surface of the trapezoidal hole 1-5 is provided with a second slide rail 1-2. A conical hole 1-3 and a straight slot 1-4 are arranged in the length direction of the movable seat 1. In use, the first slide rail 1-1 is tightly matched with the base slide rail groove 4-1 in the through hole in the circumferential direction of the base 4. In order to ensure the service life and accuracy of the slide rail, a layer of solid anti-friction material is coated on the surface thereof.

[0024] Further, the cross-sectional shape of the first slide rail 1-1 and the second slide rail 1-2 is S-shaped, which can also be other shapes except S-shaped. In the above scheme, the cross section of the movable seat slide rail groove is S-shaped structure. Through this arrangement, it has high rigidity, which ensures the stability and accuracy of the movable seat.

[0025] The outer diameter of the movable seat 1 is a circular arc surface.

[0026] As shown in the figure, Figure 4 , Figure 5As shown, the movable seat 1 is internally provided with a trapezoidal hole 1-5, the trapezoidal hole 1-5 is a through hole, the trapezoidal slide block 2 is integrally shaped to match the trapezoidal hole 1-5 in the movable seat, and the installation and use quantity is 3; the inclined surface of the trapezoidal slide block 2 is provided with a slide rail groove 2-1, and the two side surfaces of the trapezoidal slide block 2 are provided with inclined slot openings 2-2; in use, the slide rail groove 2-1 is matched with the second slide rail 1-2 on the movable seat. In the above scheme, the bottom of the trapezoidal slide block 2 is provided with two mounting holes 2-3.

[0027] The first slide rail 1-1, the second slide rail 1-2, the slide rail groove 2-1 and the base slide rail groove 4-1 are all coated with a solid anti-friction material, such as polytetrafluoroethylene, poly-p-hydroxy benzoate and the like.

[0028] As shown in the figure, Figure 2 The claw 3 is a conical fan ring structure, the inner diameter surface of the conical fan ring is provided with a V-shaped groove, the width of the adjacent groove top is 0.05-0.5mm. The inner diameter surface of the fan ring is provided with a mounting hole matched with the trapezoidal slide block 2, and the claw 3 is fixedly connected on the mounting hole 2-3 of the trapezoidal slide block through a bolt. Through this setting, the claw 3 can clasp the shaft parts to be machined more firmly, improve the positioning accuracy, and further improve the machining accuracy of the shaft parts.

[0029] The assembly principle of the utility model is:

[0030] The base 4 is assembled on the base 5, the assembled base 4 and clamping part are fixedly connected through the fastening bolt 8, and then the assembled clamping device is fixedly connected on the machine tool through the base end face.

[0031] Similarly, in order to ensure the service life and accuracy of the slide rail, a layer of solid anti-friction material is coated on the surface of the slide rail groove 2-1. After the trapezoidal slide block 2 and the movable seat 1 are assembled, the slide rail 1-1 on the movable seat is tightly matched with the base slide rail groove 4-1 in the through hole in the circumferential direction of the base 4, at the same time, the large conical pin 7 passes through the conical hole 4-3 in the middle of the L-shaped platform 4-2 on both sides of the through hole in the circumferential direction of the base 4, and the small end surface of the conical pin is in contact with the bottom of the straight slot 1-4 on the movable seat 1 as much as possible, so that the movable seat 1 is prevented from sliding out of the through hole in the circumferential direction of the base 4. In addition, the small conical pin 6 passes through the conical hole 1-3 on the movable seat 1 and the small head of the conical pin is in contact with the bottom of the inclined slot opening 2-2 on the trapezoidal slide block 2 as much as possible, so that the trapezoidal slide block 2 is prevented from sliding out of the movable seat 1.

[0032] In use, according to the size of the outer diameter of the held workpiece, the height of the circular protrusion 5-1 needs to be trimmed. The outer diameter surface of the movable seat 1 needs to be connected with the existing mechanism of the machine tool, so as to realize the movement of the movable seat 1 along the base slide rail groove 4-1, so as to realize the clamping of the shaft parts and the axial force acting on the workpiece at the same time, and ensure that the end surface of the machined part needs to be closely matched with the clamping device.

[0033] The workpiece diameter range of the utility model can be clamped is 30mm~60mm.

[0034] The above is only the preferred embodiment of the utility model, it should be pointed out that, for the person skilled in the art, without departing from the overall concept of the utility model, can also make several changes and improvements, these should also be considered as the protection scope of the utility model.

Claims

1. A novel chucking device for a CNC lathe, characterized by: The utility model relates to a kind of movable seat and base, including base (4), base (4) is provided with pedestal (5) in the center of base (4), the outer circumference of base (4) has at least two through holes, and two radial slide rail grooves are provided in the direction of base axis in through hole, movable seat (1) is connected with base (4) by the slide rail groove set on surface, movable seat (1) moves along the radial direction of base (4), realizes the clamping of shaft parts while making workpiece be subjected to axial force.

2. A novel chucking device for CNC lathe as claimed in claim 1, wherein: The base (5) is a flange structure, and the flange bottom plate is provided with an assembly hole (5-2). The middle part of the flange bottom plate is provided with a circular protrusion (5-1).

3. A novel chucking device for CNC lathe as claimed in claim 1, wherein: The base (4) is a whole circular ring structure, and the outer circumference of the base (4) is provided with a through hole. Two radial base slide rail grooves (4-1) are provided in the direction of the base axis in the through hole. The two sides of the through hole in the circumference of the base are provided with L-shaped platforms (4-2), and the middle part of the L-shaped platform (4-2) is provided with a tapered hole (4-3).

4. A novel chucking device for CNC lathe as claimed in claim 3, wherein: The movable seat (1) is provided with a first slide rail (1-1) in the width direction. The movable seat (1) is internally provided with a trapezoidal hole (1-5). The inclined surface of the trapezoidal hole (1-5) is provided with a second slide rail (1-2). The movable seat (1) is provided with a conical hole (1-3) and a straight slot (1-4) in the length direction. In use, the first slide rail (1-1) is tightly matched with the base slide rail groove (4-1) in the through hole in the circumferential direction of the base (4).

5. A novel chucking device for CNC lathe as claimed in claim 4, wherein: The cross-sectional shape of the first slide rail (1-1) and the second slide rail (1-2) is S-shaped.

6. A novel chucking device for CNC lathe as claimed in claim 4, wherein: The movable seat (1) is internally provided with a trapezoidal hole (1-5). The trapezoidal hole (1-5) is a through hole. The overall shape of the trapezoidal slide block (2) is matched with the trapezoidal hole (1-5) in the movable seat. The inclined surface of the trapezoidal slide block (2) is provided with a slide rail groove (2-1). The two side surfaces of the trapezoidal slide block (2) are provided with inclined slot openings (2-2). In use, the slide rail groove (2-1) is matched with the second slide rail (1-2) on the movable seat.

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