CN206795287U - Milling machine fixture - Google Patents

Abstract

The utility model relates to a milling machine fixing clamp, which comprises a base, a bolt device, a clamping device and a positioning device; the base is respectively provided with a first boss, a second boss and a third boss in a protruding manner; the base is also provided with an inserting groove, and the inserting groove is used for accommodating and mounting a V-shaped block; the bolt device comprises a bolt seat and a bolt inserted in the bolt seat, and the bolt seat is arranged on the first boss; the clamping device comprises a supporting block, an eccentric wheel, a handle, a pressing plate, a guide sleeve, a bolt and an elastic piece. According to the milling machine fixing clamp, the position of the shaft workpiece to be machined is fixed through the bolt device and the positioning device, so that the shaft workpiece can be prevented from being loosened or being relatively cheap in the machining process to influence the machining precision to a greater extent; in addition, an elastic part is arranged in the clamping device, and the elastic part can be adjusted through the clamping device, so that the clamping device can be adapted to shaft workpieces with various diameters, and is more flexible and changeable.

Description

Milling machine fixture

technical field

The utility model relates to the technical field of machine tool processing, in particular to a milling machine fixing fixture.

Background technique

The semicircular key groove on the shaft part is mainly used to cooperate with the semicircular key. Since the upper surface of the semicircular key is a plane, the lower surface is a semicircular arc surface, and the two sides are parallel, commonly known as the crescent key. Therefore, the structure of the semi-circular keyway is also an arc-shaped concave structure. The semi-circular key is especially suitable for the connection between the tapered shaft and the hub. The disadvantage is that the strength of the shaft is weakened, and it is generally only used in parts with less stress. The half-round key transmits torque by the side, and the key can swing around the center of curvature of the bottom surface of the groove in the half-round key groove of the shaft part, which is convenient for assembly, but the key groove is deep, and the weakening of the shaft is relatively large.

The semicircular keyway of shaft parts is generally processed on CNC machine tools. Since the surface of shaft parts is a semicircular arc surface, not only is it difficult to process, but the size and accuracy of the parts cannot be guaranteed, which affects the overall performance of the press. So use a milling machine. However, when the existing milling machines process the semicircular keyway, combined tooling is used, so the clamping accuracy is low and the overall tooling cannot be adjusted, which cannot better meet the processing requirements of the milling machine.

Utility model content

Based on this, the utility model provides a fixed fixture for a milling machine, which has a simple structure, can effectively adjust the clamping strength of the fixture, and facilitates the processing of different types of shaft workpieces.

In order to realize the purpose of the utility model, the utility model adopts the following technical solutions:

A fixed fixture for milling machines, used to clamp shaft workpieces to be processed, includes a base, a bolt device installed on the base, a clamping device and a positioning device; the bases are respectively protruded with first The boss, the second boss close to the first boss and the third boss far away from the first boss; the base is also provided with an insertion groove, and the insertion groove accommodates a V-shaped block; the latch device includes a latch seat and a pin inserted in the latch seat, the latch seat is installed on the first boss; the clamping device includes a support block, abutting The eccentric wheel of the support block, the handle mortised on one end of the eccentric wheel, the pressure plate pivotally connected to the other end of the eccentric wheel, the guide sleeve sleeved on the pressure plate, the guide sleeve pierced through the guide The set of bolts and the elastic member set on the bolts; the support block is installed on the second boss.

The above-mentioned milling machine fixing fixture fixes the position of the shaft workpiece to be processed through the pin device and the positioning device, which can largely prevent the shaft workpiece from loosening during processing or being relatively cheap to affect the processing accuracy; in addition, the clamping device is set An elastic member. By adjusting the elastic member, the clamping device can be adapted to various shaft workpieces with different diameters, which is more flexible and changeable.

In one embodiment, the positioning device includes a positioning seat and a positioning nail inserted on the positioning seat, and the positioning seat is installed on the third boss.

In one of the embodiments, a mounting hole is provided on the positioning seat, and the mounting hole accommodates and installs the positioning nail.

In one embodiment, the guide sleeve is provided with two through holes passing through its upper and lower sides, and the through holes are used for the bolts to pass through.

In one of the embodiments, the base is further provided with a punching hole, and the punching hole is located between the second boss and the insertion slot for accommodating one end connected with the bolt.

In one embodiment, the elastic member is a spring.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the milling machine fixture of a preferred embodiment of the present invention;

Fig. 2 is a schematic perspective view of another angle of view of the milling machine fixture described in Fig. 1;

Fig. 3 is an exploded schematic diagram of the milling machine fixture described in Fig. 1;

Fig. 4 is the schematic diagram of the clamping device described in Fig. 1;

Fig. 5 is an exploded schematic diagram of the clamping device described in Fig. 4;

Notes on drawings:

100-milling machine fixture; 200-axis workpiece;

10-base, 11-installation wing, 12-U-shaped groove, 13-first boss, 14-second boss, 15-third boss, 16-socket slot, 17-punching;

20-bolt device, 21-bolt seat, 22-pin;

30-clamping device, 31-support block, 32-eccentric wheel, 33-handle, 34-press plate, 35-guide sleeve, 36-bolt, 37-elastic piece, 38-nut;

40-location device, 41-location seat, 42-location nail, 43-installation hole;

50-V-shaped block.

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model.

Please refer to FIG. 1 to FIG. 5 , which are a milling machine fixture 100 according to a preferred embodiment of the present invention, which is used to clamp a shaft workpiece 200 to be processed. The milling machine fixture 100 includes a base 10 , a latch device 20 mounted on the base 10 , a clamping device 30 and a positioning device 40 . The milling machine fixes the fixture 100, the clamping device 30 clamps the shaft workpiece 200, and the latch device 20 and the positioning device 40 can prevent the shaft workpiece 200 from loosening or shifting, ensuring Processing precision.

The base 10 is mounted on the workbench of the milling machine, and two mounting wings 11 protrude from opposite sides of the base 10 respectively, and a U-shaped groove 12 is provided on each of the mounting wings 11. Installed on the workbench of the milling machine. A first boss 13, a second boss 14 close to the first boss 13, and a third boss 15 far away from the first boss 13 protrude from the working surface of the base 10, so that The first boss 13 is used to carry and install the latch device 20, the second boss 14 is used to carry and install the clamping device 30, and the third boss 15 is used to carry and install the positioning device 40. .

The base 10 is further provided with an inserting slot 16 , the inserting slot 16 is located on one side of the third boss 15 and opposite to the second boss 14 . The base 10 is further provided with a punching hole 17 , and the punching hole 17 is located between the second boss 14 and the insertion slot 16 .

The latch device 20 includes a latch seat 21 and a pin 22 inserted in the socket socket 21 , and the latch seat is installed on the first boss. In this embodiment, the shaft workpiece 200 is a metal rod with a pin hole (not shown) at one end thereof. The tip of the pin 22 is inserted into the pin hole of the shaft workpiece 200, so as to prevent the shaft workpiece 200 from shifting during processing and resulting in a decrease in machining accuracy.

The clamping device 30 includes a support block 31, an eccentric wheel 32 abutting against the support block 31, a handle 33 mortised on one end of the eccentric wheel 32, and a handle 33 pivotally connected to the other end of the eccentric wheel 32. The pressure plate 34, the guide sleeve 35 sleeved on the pressure plate 34, the bolt 36 pierced through the guide sleeve 35, and the elastic member 37 sleeved on the screw rod 36; in this embodiment, the The elastic member 37 is a spring. The support block 31 is installed on the second boss 14, and an arc-shaped notch is provided on its top surface, and the notch is used to bear against the eccentric wheel 32. The eccentric wheel 32 is an inverted cylinder, and the handle 33 is mortised on the side of the eccentric wheel 32 and fixed by the first lock cylinder. Viewed from the cross section, the pressing plate 34 is roughly U-shaped, and the pressing plate 34 is pivotally connected to the eccentric wheel 32 through the second lock cylinder. The guide sleeve 35 is provided with two through holes passing through its upper and lower sides, and the bolt 36 is inserted into the punching hole 17 through the two through holes. In order to make the elastic force of the elastic member 37 more compact, the clamping device 30 is also provided with a nut 38, the nut 38 abuts on the punched hole 17, and the nut 38 is connected to the bolt 36, so that The elastic member 37 is sandwiched between the bolt 36 and the nut 38, and the elastic member 37 can be compressed to increase its elastic force by adjusting the distance between the bolt 36 and the nut 38, thereby strengthening the elastic member 37. The clamping force of the clamping device 30.

The positioning device 40 includes a positioning seat 41 and a positioning pin 42 inserted in the positioning seat 41 . The positioning seat 41 is roughly in the shape of an inverted T and is installed on the third boss 15 . An installation hole 43 is defined on the positioning seat 41 , and the installation hole 43 accommodates the positioning nail 42 for installation. The positioning nail 42 is a metal nail with a flat head, which is used to support one end of the shaft workpiece 200 to prevent the shaft workpiece 200 from sliding relative to each other during processing and affecting the machining accuracy.

A V-shaped block 50 is also provided on the base 10, and the V-shaped block 50 is installed in the insertion groove 16. The position of the V-shaped block 50 corresponds to the position of the pressing plate 34, and the The shaft workpiece 200 is clamped up and down.

The above-mentioned milling machine fixing fixture fixes the position of the shaft workpiece to be processed through the pin device and the positioning device, which can largely prevent the shaft workpiece from loosening during processing or being relatively cheap to affect the processing accuracy; in addition, the clamping device is set An elastic member. By adjusting the elastic member, the clamping device can be adapted to various shaft workpieces with different diameters, which is more flexible and changeable.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (6)

1. A kind of 1. milling machine stationary fixture, for clamping shaft-like workpiece to be processed, it is characterised in that the milling machine stationary fixture bag Include a pedestal, the bolt device being installed on the pedestal, clamping device and positioner；Projection first is distinguished on the pedestal Boss, the second boss close to the first boss and the 3rd boss away from the first boss；It is additionally provided with the pedestal One inserting groove, the inserting groove one vee-block of accommodating installation；The bolt device includes a plug housing and is inserted in the plug housing In pin, the plug housing is installed in the first boss；The clamping device includes a support block, abuts the support The eccentric wheel of block, joggle in one end of the eccentric wheel handle, be articulated in the eccentric wheel the other end pressing plate, be sheathed on Guide pin bushing on the pressing plate, it is arranged in the bolt of the guide pin bushing and the elastic component being sheathed on the bolt；The support block peace Loaded in the second boss.
2. 2. milling machine stationary fixture according to claim 1, it is characterised in that the positioner includes a positioning seat and inserted Locating pin on the positioning seat, the positioning seat are installed on the 3rd boss.
3. 3. milling machine stationary fixture according to claim 2, it is characterised in that a mounting hole is offered on the positioning seat, The mounting hole, which accommodates, installs the locating pin.
4. 4. milling machine stationary fixture according to claim 1, it is characterised in that the guide pin bushing is provided with through its upper and lower surface Two through holes, the through hole are worn and mistake for the bolt.
5. 5. milling machine stationary fixture according to claim 1, it is characterised in that a punching is additionally provided with the pedestal, it is described Punching is between the second boss and the inserting groove, to one end of the accommodating connection bolt.
6. 6. milling machine stationary fixture according to claim 1, it is characterised in that the elastic component is a spring.