CN102490052A - Milling machine clamp for shell components - Google Patents

Abstract

The invention discloses a milling machine clamp for shell parts, the clamp body is fixed on the milling machine workbench; a left pressure plate and a right pressure plate are arranged symmetrically on both sides of the clamp body; the lower end of the supporting nail is installed on the clamp body through a lock nut , the upper end of the supporting nail is supported on the outer end of the left pressing plate; the lower end of the left rotating rod passes through the middle of the left pressing plate and the clip body and is connected with one end of the lever; the other end of the lever is connected with the middle and The right side of the clamp body is connected to the lower end of the rotating rod, and the support is arranged on the clamp body and supported in the middle of the lever; the pressure spring is set on the rotating rod and is located between the pressure plate and the clamp body; the positioning plate is arranged on the clamp body and is located on the left side In the central area of the pressing plate and the right pressing plate, cylindrical pins are arranged on the positioning plate. The invention can realize the clamping of parts with similar shapes and different sizes, adopts two-point linkage axial clamping, has compact structure, simple, convenient and reliable operation, reduces labor intensity of workers, and improves production efficiency.

Description

Milling machine fixture for shell parts

the

technical field

The invention relates to a clamp for a shell part milling machine, in particular to a machine tool clamp for milling a straight groove on the end face of a shell part.

Background technique

With the development of science and technology, the demand for shell parts is increasing day by day. At present, different milling machine fixtures are usually used for clamping shell parts with similar shapes and different sizes, which increases the design and manufacturing costs of fixtures and the production preparation cycle. At the same time, the existing shell part milling machine fixture is complex to operate, labor-intensive and low in production efficiency.

Contents of the invention

In order to overcome the problems existing in the prior art, the object of the present invention is to provide a shell part milling machine fixture, which is suitable for clamping shell parts with similar shapes and different sizes, and adopts two-point linkage axial clamping, The structure is compact, the operation is simple, convenient and reliable, which reduces the labor intensity of workers and improves production efficiency.

The purpose of the present invention is achieved through the following technical solutions:

A milling machine fixture for shell parts, characterized in that the milling machine fixture includes a clamp body, a support nail, a left pressure plate, a right pressure plate, a pressure spring, a positioning plate, a left rotating rod, a right rotating rod, a cylindrical pin, and a lever and support; the clamp body is fixed on the workbench of the milling machine; a left pressure plate and a right pressure plate are symmetrically arranged on both sides of the clamp body; the lower end of the support nail is installed on the clamp body through a lock nut, and the upper end of the support nail is supported on The outer end of the left pressing plate; the lower end of the left rotating rod passes through the middle part of the left pressing plate and the clip body and is connected with one end of the lever, and the upper end of the left rotating rod is provided with a compression nut; the other end of the lever is connected with the The middle part of the right pressing plate is connected with the lower end of the right rotating rod of the clamp body, and a nut is arranged at the upper end of the right rotating rod; the support is arranged on the clamp body and supported on the middle part of the lever; the pressure springs on both sides are respectively set on the left rotating rod The rod and the right rotating rod are respectively located between the left clamping plate, the right clamping plate and the clamp body; the positioning plate is arranged on the clamping body and is located in the central area of the left clamping plate and the right clamping plate, and the cylindrical pin matching the workpiece set on the positioning plate.

In the present invention, the clamp body is fixed on the workbench of the milling machine through bolts and orientation keys. A long groove is provided on the lever; the end of the support is arranged in the long groove of the lever. The supporting nails are screwed on the clamp body. The protruding length of the support nail is adapted to the size of the workpiece. Both the left pressing plate and the right pressing plate are provided with square grooves, and the lower ends of the left and right rotating rods respectively pass through the middle square grooves of the left pressing plate and the right pressing plate and are connected with the lever. Both ends of the lever are connected with the left turning lever and the right turning lever through pins.

In the present invention, the cylindrical pin can be replaced according to the radial basic size of the workpiece hole ; the tool setting block on the milling machine table is threadedly connected to the clamp body, which can facilitate tool setting, thereby meeting the position requirements of the tool relative to the part and ensuring Processing quality of parts. The rotating rod that stage clip is housed is connected with lever by pin. The support nails are threaded on the clamp body and are equipped with lock nuts. The extension length of the support nails can be adjusted according to the size of the workpiece. The workpiece is clamped with a pressure plate after being positioned on the positioning plate and cylindrical pin with the end face and inner hole.

The working principle of the present invention is:

According to the radial basic size of the shell part hole to be processed, design and process the cylindrical pin (when the radial basic size of the part hole changes, the cylindrical pin needs to be replaced), and then use the end surface and inner hole of the workpiece on the positioning plate and the cylindrical Positioning is done on the pin. Tighten the nut so that the left pressing plate presses the workpiece downward, and at the same time, the left rotating rod drives the lever to rotate clockwise around the support, so that the right rotating rod drives the right pressing plate to jointly compress the workpiece. When the workpiece has finished the straight groove processing, unscrew the nut, loosen the workpiece by turning the compression spring on the rod, and move the pressure plate along the guide groove on the support nail to realize the free loading and unloading of the workpiece. When the axial dimension of the pressing surface of the workpiece changes, it is necessary to adjust the protruding dimension of the supporting nail first, and adjust the nut appropriately so that the pressing plate is basically in a horizontal position.

The invention can realize the clamping of parts with similar shapes but different sizes. Axial clamping eliminates the error caused by workpiece deformation due to radial clamping; for parts with different radial dimensions or different axial dimensions, it is only necessary to replace the cylindrical pin or adjust the extension length of the supporting nail. Realize the clamping of the workpiece, thereby effectively reducing the design and manufacturing cost of the fixture and the production preparation cycle. The use of spherical washers enables effective clamping even when the axial dimension of the pressing surface of the same batch of parts changes.

The invention adopts two-point linkage axial clamping, compact structure, simple, convenient and reliable operation, reduces labor intensity of workers, and improves production efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Detailed ways

A milling machine fixture for shell parts according to the present invention, as shown in Figure 1, the milling machine fixture includes a clamp body 1, a lock nut 2, a support nail 3, a left pressing plate 41, a right pressing plate 42, a compression spring 5, and a directional key 20, positioning plate 12, left side turning bar 91, right side turning bar 92, cylindrical pin 10, lever 17 and support 18. Directional key 20 is fixed on clamp body 1 by screw 21, and is used for determining the position of milling machine clamp relative to machine tool; Milling machine clamp is fastened on the milling machine workbench at the lug seat 15 position of clamp body 1 by bolt; Positioning plate 12 is passed screw 19 is connected with clip body 1. The cylindrical pin 10 is connected to the positioning plate 12, wherein the cylindrical pin 10 can be replaced according to the radial basic dimension of the workpiece hole . The tool setting block 14 is threadedly connected to the clamp body 1, which facilitates tool setting, thereby meeting the position requirements of the tool relative to the part and ensuring the processing quality of the part. The left side pressure plate 41 and the right side pressure plate 42 are arranged symmetrically on both sides of the clamp body 1; the lower end of the support nail 3 is installed on the clamp body 1 through the lock nut 2, and the upper end of the support nail 3 is supported on the outer end of the left side pressure plate 41 The lower end of the left side turning bar 91 is connected with an end of the lever 17 after passing through the middle part of the left side pressing plate 41 and the clip body 1, and the upper end of the left side turning bar 91 is provided with a compression nut 8. The other end of lever 17 is connected with the lower end of the right side turning bar 92 that passes the middle part of right side pressing plate 42 and clamp body 1, and the upper end of right side turning bar 92 is provided with nut 13. Both ends of the lever 17 are connected with the left side turning bar 91 and the right side turning bar 92 through the pin 16 . The lever 17 is provided with a long groove, and the support 18 is arranged on the clamp body 1 and supported in the middle long groove of the lever 17 . The compression springs 5 on both sides are respectively sleeved on the left rotating rod 91 and the right rotating rod 92 and are respectively located between the left pressing plate 41 , the right pressing plate 42 and the clip body 1 . The positioning plate 12 is arranged on the clamp body 1 and is located in the central area of the left pressing plate 41 and the right pressing plate 42 , and the cylindrical pin 10 is arranged on the positioning plate 12 .

The protruding length of the supporting nail 3 is adapted to the size of the workpiece 11, and the protruding length of the supporting nail 3 can be adjusted according to the axial dimension of the pressing surface of the workpiece. The diameter of the cylindrical pin 10 is adapted to the workpiece 11 .

The left pressing plate 41 and the right pressing plate 42 are provided with square grooves to facilitate loading and unloading of workpieces . The workpiece 11 is placed on the positioning plate 12 and the cylindrical pin 10 with the end face and inner hole, and is clamped with a pressure plate after positioning.

During work, design and process the size of the straight pin 10 according to the radial basic size of the shell part hole to be processed, and then complete the positioning on the positioning plate 12 and the straight pin 10 with the end face and the inner hole of the workpiece 11. Tighten the nut 8 to make the left side pressing plate 41 compress the workpiece downwards, while the left side turning lever 91 drives the lever 17 to rotate clockwise around the support 18, so that the right turning lever 92 drives the right side pressing plate 42 to press the workpiece in linkage. After the workpiece has finished the straight groove processing, unscrew the nut 8, loosen the workpiece by the compression spring 5 on the rotating rod, move the pressure plate on the support nail 3 along the guide groove, and then the free loading and unloading of the workpiece can be realized.

When the axial dimension of the pressing surface of the workpiece changes, it is necessary to adjust the protruding dimension of the support nail 3 first, and properly adjust the nut 13 so that the pressing plate 4 is basically in a horizontal position. The device of the invention uses a spherical washer, so that the same batch of parts can be effectively clamped even when the axial dimension of the pressing surface changes.

The invention adopts two-point linkage axial clamping, compact structure, simple, convenient and reliable operation, reduces labor intensity of workers, and improves production efficiency.

Claims (7)

1. A milling machine clamp for shell parts, characterized in that: the milling machine clamp includes a clamp body (1), a support nail (3), a left pressure plate (41), a right pressure plate (42), a compression spring (5), Positioning plate (12), left turning lever (91), right turning lever (92), cylindrical pin (10), lever (17) and support (18); the clamp body (1) is fixed on the milling machine table top; on both sides of the clamp body (1), there are left pressure plate (41) and right pressure plate (42) arranged symmetrically; the lower end of the support nail (3) is installed on the clamp body (1) through the lock nut (2), The upper end of the supporting nail (3) is supported on the outer end of the left pressing plate (41); the lower end of the left rotating rod (91) passes through the middle part of the left pressing plate (41) and the clamp body (1) and connects with the lever (17) One end of the lever (91) is connected with a compression nut (8); the other end of the lever (17) passes through the middle of the right pressure plate (42) and the right side of the clamp body (1). The lower end of the rotating rod (92) is connected, and the upper end of the right rotating rod (92) is provided with a nut (13); the support (18) is arranged on the clamp body (1) and supported on the middle part of the lever (17); Compression springs (5) are set respectively on the left rotating rod (91) and the right rotating rod (92) and are respectively located between the left pressing plate (41), the right pressing plate (42) and the clamp body (1); positioning The plate (12) is set on the clamp body (1) and located in the central area of the left platen (41) and the right platen (42), and the cylindrical pin (10) matching the workpiece is set on the positioning plate (12). 2. The milling machine fixture for shell parts according to claim 1, characterized in that: the fixture body (1) is fixed on the milling machine workbench by the directional key (20) and the bolt at the lug seat (15). 3. The milling machine fixture for shell parts according to claim 1, characterized in that: a long slot is provided on the lever (17); the end of the support (18) is set in the long slot of the lever (17). 4. The milling machine clamp for shell parts according to claim 1, characterized in that: the support nail (3) is connected to the clamp body (1) through threads. 5. The fixture for milling machine for shell parts according to claim 1, characterized in that: the protruding length of the support nail (3) is adapted to the size of the workpiece. 6. The milling machine fixture for shell parts according to claim 1, characterized in that square grooves are provided on the left pressing plate (41) and the right pressing plate (42), and the left rotating rod (91) and the right The lower end of the turning rod (92) is connected with the lever (17) after passing through the middle square groove of the left pressing plate (41) and the right pressing plate (42) respectively. 7. The milling machine fixture for shell parts according to claim 1, characterized in that: both ends of the lever (17) are connected to the left rotating rod (91) and the right rotating rod (92) through pins (16).

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