CN217071537U - A new type of external pressure clamp - Google Patents

Abstract

The utility model relates to the technical field of mechanical manufacturing design, and discloses a novel external pressure clamp, which comprises a machine base and a plurality of rotary downward pressure cylinders mounted on the machine base, wherein a piston rod of the rotary downward pressure cylinder is installed with an upward pressure The upper pressing head includes a pressing seat and a pressing rod. A horizontally arranged chute is opened in the pressing seat, a slider is fixed on the upper end of the pressing rod, and the slider is embedded in the chute, The upper pressing head is threadedly connected with a pressing screw, and the lower end of the pressing screw is pressed against the upper end face of the sliding block. The utility model has the following advantages and effects: the parts to be processed are placed on the lower clamping seat, the piston rod of the rotating and pressing cylinder moves, and the upper pressing head is driven to rotate and descend, and the pressing rod on the upper pressing head is pressed on the parts, the It is pressed and fixed so that its inner wall can be machined. After the processing is completed, the piston rod of the rotary lowering cylinder moves again, driving the upper indenter to rotate and rise. After the upper indenter is separated from the part, the part can be removed.

Description

A new type of external pressure clamp

technical field

The utility model belongs to the technical field of mechanical manufacturing design, in particular to a novel external pressure clamp.

Background technique

The machining center is a highly automated multi-function CNC machine tool with a tool magazine and an automatic tool changer. After the workpiece is clamped once on the machining center, the digital control system can control the machine tool to automatically select and replace the tool according to different processes, and automatically change the machine tool spindle speed, feed rate and the movement path of the tool relative to the workpiece and other auxiliary functions. Multi-process machining on several sides of the workpiece. And there are a variety of tool change or tool selection functions, so that the production efficiency is greatly improved. When the machining center processes the internal parts of the cylindrical structure, it is difficult to use conventional fixtures such as three-jaw chucks to meet the processing requirements. Therefore, it is necessary to design a special fixture for clamping, which can adapt to parts of different sizes.

Utility model content

The purpose of the utility model is to provide a novel external pressure clamp, which has the effect of quickly clamping cylindrical parts and being suitable for parts of different sizes.

The above technical purpose of the present utility model is achieved through the following technical solutions: a novel external pressure clamp, comprising a machine base, a plurality of rotary pressing cylinders mounted on the machine base, and a piston rod of the rotary pressing cylinder. An upper pressure head is installed. The upper pressure head includes a pressure seat and a pressure rod. A horizontally arranged chute is opened in the pressure seat. A slider is fixed on the upper end of the pressure rod, and the slider is embedded in the In the chute, the upper pressing head is threadedly connected with a pressing screw, and the lower end of the pressing screw is pressed against the upper end face of the slider.

The utility model is further provided as follows: the sliding groove is a T-shaped groove.

The utility model is further provided as follows: the pressing rod comprises an upper rod body and a lower rod body, the upper end of the upper rod body is fixed with the sliding block, and the lower rod body is threadedly connected with the lower end of the upper rod body.

The utility model is further provided as follows: the machine base is provided with a lower clamping seat, and three rotating pressing cylinders are distributed around each lower clamping seat.

The utility model is further provided as follows: the lower clamping base includes a base and a positioning base, the positioning base is connected to the base through bolts, and the positioning base is provided with a positioning portion.

The beneficial effects of the present utility model are:

1. Place the part to be processed on the lower clamping seat, rotate the piston rod of the lower pressure cylinder to act, drive the upper pressure head to rotate and descend, the pressure rod on the upper pressure head is pressed on the part, and it is pressed and fixed so as to Its inner wall is processed. After the processing is completed, the piston rod of the rotating lower pressure cylinder moves again, driving the upper pressure head to rotate and rise. After the upper pressure head is separated from the parts, the parts can be removed.

2. When it is necessary to clamp parts of different sizes, loosen the bolt to replace the positioning seat. After loosening the compression screw, the position of the slider and the pressure rod can be adjusted along the direction of the chute, which is suitable for clamping parts of different sizes. .

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

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

Fig. 2 is a schematic diagram of the positional relationship between the lower clamping seat and the rotary lowering cylinder of the present invention.

FIG. 3 is a schematic diagram of the structure of the upper indenter of the present invention.

FIG. 4 is a schematic diagram of the structure of the part to be processed according to the present invention.

In the figure, 1, machine base; 2, rotary press cylinder; 3, upper press head; 31, press seat; 311, chute; 32, press rod; 321, upper rod body; 322, lower rod body; 33, pressing Screw; 34, slider; 4, lower clamping seat; 41, base; 42, positioning seat; 421, positioning part; 5, parts to be processed.

Detailed ways

The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

A new type of external pressure fixture, as shown in Figures 1 to 4, includes a machine base 1, four lower clamping bases 4, and twelve rotary pressing cylinders 2. The lower clamping base 4 and the rotary pressing cylinder 2 are installed in the On the machine base 1 , three rotary pressing cylinders 2 are distributed around each lower clamping base 4 . The upper pressure head 3 is installed on the piston rod of the rotary pressing cylinder 2. The upper pressing head 3 includes a pressing seat 31, a pressing rod 32 and a pressing screw 33. The pressing seat 31 is fixed on the piston rod of the rotary pressing cylinder 2, and the pressing seat 31 is opened. There is a horizontal chute 311, and the chute 311 is a T-shaped groove. The pressure rod 32 includes an upper rod body 321 and a lower rod body 322. A slider 34 is fixed on the upper end of the upper rod body 321. The slider 34 is embedded in the chute 311. The position between the upper rod bodies 321 is appropriately fine-tuned for the pressing height after pressing down. The pressing screw 33 is threadedly connected to the pressing seat 31 , and its lower end is pressed against the upper end surface of the sliding block 34 to fix the position of the sliding block 34 . The lower clamping base 4 includes a base 41 and a positioning base 42. The base 41 is installed and fixed on the machine base 1, and the positioning base 42 is connected to the base 41 by bolts. The positioning base 42 is provided with a positioning portion 421. The positioning portion 421 is used for processing Parts have a positioning function.

The structure of the part 5 to be processed is shown in Figure 4. The part 5 to be processed is placed on the lower clamping seat 4, and the piston rod of the lower pressing cylinder 2 is rotated to drive the upper pressing head 3 to rotate and descend. The pressing rod 32 is pressed on the part to be pressed and fixed so as to process its inner wall. After the processing is completed, the piston rod of the rotating and lowering cylinder 2 moves again to drive the upper indenter 3 to rotate and rise. After the upper indenter 3 is separated from the parts, the parts can be removed.

Claims (5)

1. A new type of external pressure clamp, characterized in that: it comprises a machine base (1), a plurality of rotary downward pressure cylinders (2) installed on the machine base (1), and the rotary downward pressure cylinder (2) has The piston rod is provided with an upper pressure head (3), the upper pressure head (3) includes a pressure seat (31) and a pressure rod (32), and a horizontally arranged chute (311) is opened in the pressure seat (31) A slider (34) is fixed on the upper end of the pressing rod (32), the slider (34) is embedded in the sliding groove (311), and the upper pressing head (3) is threadedly connected with a pressing screw (33), the lower end of the pressing screw (33) abuts the upper end surface of the slider (34). 2. A new type of external pressure clamp according to claim 1, characterized in that: the sliding groove (311) is a T-shaped groove. 3. A new type of external pressure clamp according to claim 2, characterized in that: the pressure rod (32) comprises an upper rod body (321) and a lower rod body (322), and the upper end of the upper rod body (321) is connected to the upper rod body (321). The slider (34) is fixed, and the lower rod body (322) is threadedly connected with the lower end of the upper rod body (321). 4. A new type of external pressure clamp according to claim 3, characterized in that: the machine base (1) is provided with a lower clamping seat (4), and three lower clamping seats (4) are distributed around each of the lower clamping bases (4). The rotary press-down cylinder (2). 5. A new type of external pressure clamp according to claim 4, characterized in that: the lower clamping seat (4) comprises a base (41) and a positioning seat (42), and the positioning seat (42) is connected by bolts On the base (41), the positioning seat (42) is provided with a positioning portion (421).

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