CN204430895U - A kind of cylindrical part both ends of the surface processing clamping device - Google Patents

Abstract

A clamping device for processing both ends of a cylindrical part, which is characterized in that it includes a bed frame panel, on which a feed servo motor is driven by a screw mechanism to drive a carriage to run on the bed frame panel; the carriage is provided with a V-shaped positioning device, wherein there are two positioning blocks, and the inclined planes of the two positioning blocks are arranged symmetrically to form a V-shaped positioning groove; the bottom of each positioning block is respectively provided with threaded holes, which are respectively matched with two sections of external threads on the screw rod, so that the two positioning blocks It can be translated in reverse on the sliding guide rail; a handle is provided at one end of the screw rod; the sliding guide rail and the carriage are relatively fixed, and there is a translation groove on it, and the fastening bolts passing through the translation groove are used to fix the positioning block. There is a pressing device, which includes a pressure head and a pressing power device, and the pressing power device is relatively fixed with the carriage; it also includes a zero point positioning plate, which is detachably installed on the bed frame panel, and is used for positioning the workpiece. end face. It can effectively improve the position accuracy and production efficiency of the machining of both ends of cylindrical parts.

Description

A clamping device for processing both ends of a cylindrical part

technical field

The utility model relates to a clamping device, in particular to a clamping device for processing both ends of a cylindrical part.

Background technique

At present, most of the fixtures for processing cylindrical parts on lathes are three-jaw chucks or four-jaw chucks. The three-jaw chuck has the function of automatic positioning and centering, and is only suitable for the processing of small-sized cylindrical parts. When the four-jaw chuck clamps cylindrical parts, a cylindricity measuring instrument is required to measure and determine the center position of the circle, so this processing method has large dimensional errors and long processing time. For cylindrical parts that must be processed on both ends, it needs to be turned around and clamped twice. Not only the processing time is long, the processing cost is high, and it is difficult to ensure the parallelism of the two ends.

Utility model content

In order to overcome the disadvantages of the above-mentioned prior art, the purpose of this utility model is to provide a clamping device for machining both ends of a cylindrical part, which can not only improve the machining accuracy of the workpiece, but also improve the machining efficiency.

In order to solve the above problems, the utility model adopts the following technical solutions: a clamping device for processing both ends of cylindrical parts, including a bed frame panel, one end of the bed frame panel is fixed with a feed servo motor, and the feed servo motor passes through the screw mechanism A carriage is driven to run on the bed frame panel; a V-shaped positioning device is set on the carriage, and the V-shaped positioning device includes a handle, a screw, and a positioning block. There are two positioning blocks, which are respectively a left positioning block and a right positioning block. As for the positioning block, a slope is respectively arranged on the two positioning blocks, and the two slopes are mutually symmetrical about a vertical center line; the slopes on the two positioning blocks together form a V-shaped positioning groove, and a threaded hole is respectively provided at the bottom of each positioning block , one screw rod is provided with two sections of external thread, one section of external thread is assembled with the threaded hole of the left positioning block, and the other section of external thread is assembled with the threaded hole of the right positioning block; the two sections of external thread of the screw drive the left positioning block respectively The block and the right positioning block are translated in opposite directions on a sliding guide rail; one end of the screw rod is provided with a handle; the sliding guide rail is relatively fixed to the carriage, and the sliding guide rail is provided with a translation groove for the translation of the positioning block , each positioning block is connected with a vertical fastening bolt that can fix the positioning block on the sliding guide rail, and the fastening bolt passes through the translation groove of the sliding guide rail; directly above the V-shaped positioning groove is provided with A pressing device, the pressing device includes a pressing head and a pressing power device that drives the pressing head to move up and down, and the pressing power device is relatively fixed to the carriage;

It also includes a zero-point positioning plate, which is detachably installed on the bed frame panel and used for positioning the end face of the workpiece.

As a further technical solution of the present invention: in the clamping device for processing both ends of the cylindrical part, the lower surface of the pressing head of the pressing device is an arc-shaped concave surface. The vertical center line of the arc-shaped concave surface coincides with the symmetrical center line of the slopes of the two positioning blocks.

As a further technical solution of the present invention: in the clamping device for processing both ends of the cylindrical part, the pressing power device is a pressing cylinder, and the cylinder seat of the pressing cylinder is fixed on the carriage.

The beneficial effect of the utility model is that it effectively improves the position accuracy and production efficiency of the machining of the two ends of the cylindrical part, and reduces the production cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

Fig. 1 is the three-dimensional structure schematic diagram of the utility model embodiment;

Fig. 2 is the two-dimensional structure schematic diagram of the utility model embodiment;

Fig. 3 is a structural schematic diagram of a cylindrical part in the milling position.

In the picture:

1 bed frame panel; 2 zero point positioning plate; 3 workpiece;

4 pressing device; 41 pressure head,

5 positioning block; 51 left positioning block, 52 right positioning block, 53V type positioning slot,

6 slide rails; 61 translation slots, 62 fastening bolts,

7 lead screw mechanism; 8 linear guide rail; 9 servo motor seat; 10 feed servo motor; 11 handle;

12 screw; 121 external thread, 122 external thread,

13 compression cylinder; 14 cylinder seat; 15 carriage;

16 left milling power head; 17 left milling cutter head; 18 right milling cutter head; 19 right milling power head.

Detailed ways

As shown in Figures 1, 2, and 3, the clamping device for processing both ends of the cylindrical part includes a bed frame panel 1, and one end of the bed frame panel 1 is fixed with a feed servo motor 10, and the feed servo motor 10 passes through a screw mechanism. 7 drives a carriage 15 to run on the bedstead panel 1. A linear guide rail 8 is established on the bed frame panel, and the carriage 15 runs along the linear guide rail 8 .

A V-shaped positioning device is arranged on the carriage 15 , and the V-shaped positioning device includes a handle 11 , a screw rod 12 and a positioning block 5 .

There are two positioning blocks 5 , which are respectively a left positioning block 51 and a right positioning block 52 . An inclined plane is respectively arranged on the two positioning blocks, and the two inclined planes are symmetrical to each other about a vertical center line. The slopes on the two positioning blocks 5 jointly form a V-shaped positioning groove 53 .

The bottom of each positioning block is respectively provided with a threaded hole, the screw rod 12 is provided with two sections of external thread 121,122, one section of external thread 121 is assembled with the threaded hole of left positioning block 51, and the other section of external thread 122 is connected with the right positioning block. 52 threaded holes fit together. The two sections of external thread 121, 122 of the screw rod 12 respectively drive the left positioning block 51 and the right positioning block 52 to translate in opposite directions on a sliding guide rail 6, that is, the two positioning blocks are closed and separated, that is, the V-shaped positioning groove 53 is adjusted. width to accommodate cylindrical workpieces of different diameters. It can be realized by the opposite direction of rotation and equal pitch of the two threads. One end of the screw 12 is provided with a handle 11 for operating the rotation of the screw 12 .

The sliding guide rail 6 is relatively fixed with the carriage 15, and the sliding guide rail 6 is provided with a translation groove 61 for the translation of the positioning block 5, and each positioning block is connected with a vertical positioning block that can be fixed on the sliding guide rail. The fastening bolt 62 passes through the translation groove 61 of the sliding guide rail. After the distance between the two positioning blocks is adjusted, tighten the respective fastening bolts 62 to fix the positioning block 5 and the sliding guide rail 6 together, ensuring that no displacement can occur during the processing of the workpiece.

A pressing device 4 is arranged directly above the V-shaped positioning groove 53 formed between the two positioning blocks. The pressing device 4 includes a pressing head 41 and a pressing power device that drives the pressing head to move up and down. In this embodiment, the described Compression power unit is a compression cylinder 13, and the cylinder base 14 of compression cylinder is fixed on the carriage 15. As other implementations, the compression cylinder can also be replaced by other power devices, such as hydraulic power devices, electric power devices, etc., which all belong to the equivalent replacement of the cylinder without substantial changes. The lower surface of the pressure head 41 of the pressing device is an arc concave surface, and the vertical center line of the arc concave surface coincides with the mutually symmetrical center line of the slopes of the two positioning blocks, so that the clamping is more reliable and helps to ensure the stability of the workpiece. Precision.

The clamping device for processing both ends of the cylindrical part also includes a zero point positioning plate 2, which is detachably installed on the bed frame panel 1 and used for positioning the end faces of the workpiece 3.

The clamping device for processing both ends of the cylindrical part adopts a V-shaped positioning device and a compression cylinder 13 as the clamps of the machine tool. The positioning block 5 has good neutrality, simple structure, convenient clamping and positioning, and is suitable for processing cylindrical parts with a certain range of diameters. The compression cylinder 13 is clamped by a pressurized cylinder, which is quick in action, reliable in compression, and easy to operate.

After determining the diameter of the blank, rotate the handle 11 to drive the two positioning blocks to move the same distance in two directions respectively. After fixing, place the workpiece 3 on the V-shaped positioning groove 53, and make one end surface of the workpiece 3 close to the Zero point positioning plate 2, the workpiece 3 will be centered automatically.

Then the compression cylinder 13 pushes the ram 41 to move downwards to compress the workpiece 3 .

The feed servo motor 10 drives the carriage 15 to the designated processing area through the screw mechanism 7, and the left milling power head 16 and the right milling power head 19 start to process the two ends of the workpiece 3 respectively.

After the workpiece milling was completed, the left milling cutter head 17 and the right milling cutter head 18 stopped rotating, and the feed servo motor 10 reversely rotated, and the carriage 15 and the workpiece 3 were driven by the screw mechanism 7 to move to the starting point. Loosen the fastening bolt 52, turn the handle 11, the two positioning blocks are separated, and the workpiece 3 is taken out.

"Left" and "right" in the present utility model are relative positional relationships adopted for the convenience of description, and do not represent absolute positions.

Claims (3)

1. a cylindrical part both ends of the surface processing clamping device, it is characterized in that, comprise bedstead panel, one end of bedstead panel is installed with feed servo motor, and feed servo motor drives a planker to operate on bedstead panel by screw mechanism; Planker is arranged V-type positioner, described V-type positioner comprises handle, screw rod, locating piece, and described locating piece is provided with two, is respectively left locating piece, right locating piece, two locating pieces arrange an inclined-plane respectively, and two inclined-planes are symmetrical each other about a vertical center line; Inclined-plane on two locating pieces forms a V-type locating slot jointly, the bottom of each locating piece arranges a screwed hole respectively, one screw rod is provided with two sections of external screw threads, the screwed hole of one section of external screw thread and left locating piece is assembled together, and the screwed hole of another section of external screw thread and right locating piece is assembled together; Two sections of external screw threads of screw rod drive the oppositely translation mutually on a rail plate of left locating piece, right locating piece respectively; One end of described screw rod is provided with handle; Described rail plate is relative with described planker fixing, described rail plate is provided with the translation groove for locating piece translation, each locating piece is all connected with the vertical fastening bolt that locating piece can be fixed on rail plate, fastening bolt is through the translation groove of described rail plate; Be provided with hold down gag directly over described V-type locating slot, hold down gag comprises the compression power set that pressure head and drive ram move up and down, and compresses power set relative with described planker fixing;

Also comprise a zero-point positioning plate, be dismountablely arranged on bedstead panel, for the end face of positioning workpieces.

2. a kind of cylindrical part both ends of the surface processing clamping device according to claim 1, it is characterized in that, the lower surface of the pressure head of described hold down gag is an arc-shaped concave, and the center line of the vertical center line of arc-shaped concave and the inclined-plane of two locating pieces symmetry each other overlaps.

3. a kind of cylindrical part both ends of the surface processing clamping device according to claim 1 and 2, is characterized in that: described compression power set are a compression cylinder, and the cylinder block of compression cylinder is packed on planker.