CN206998353U - a pneumatic clamp - Google Patents

Abstract

The utility model discloses a pneumatic fixture, backup pad placed including a level, one side of backup pad is fixed with support column such as dysmorphism setting element, thick embryo hole setting element and two, be equipped with a dysmorphism hole reference column on the dysmorphism setting element, be equipped with a conical elastic pin on the thick embryo hole setting element, the corner cylinder is installed to the opposite side of backup pad. Adopt the utility model discloses a pneumatic fixture replaces to pass traditional manual clamping mode, places the dysmorphism hole of work piece and the alignment of rough blank hole on anchor clamps earlier, can realize tentatively fixing a position, and the firm work piece of quick clamp can be realized to rethread corner cylinder, and the clamping is firm reliable, and centering precision is high, work intensity of labour alleviates greatly.

Description

a pneumatic clamp

technical field

The utility model relates to the technical field of CNC machinery manufacturing, in particular to a pneumatic clamp.

Background technique

Before processing the workpiece, it is generally necessary to clamp and fix it. Before that, the ordinary three-jaw chuck was used for manual clamping. Due to the difference in the diameter of the large and small ends of the workpiece, the clamping is extremely inconvenient. The three-jaw chuck The disk needs to be loosened a lot to load and unload the workpiece, the production efficiency is very low, and the labor intensity of the manual frequent clamping workers is quite large.

Utility model content

The purpose of this utility model is to provide a pneumatic clamp to solve the above technical problems.

For this purpose, the utility model adopts the following technical solutions:

A pneumatic clamp, comprising a support plate placed horizontally;

One side of the support plate is fixed with a special-shaped positioning piece, a rough blastopore positioning piece and two support columns of equal height; a special-shaped hole positioning column is provided on the special-shaped positioning piece, and a cone Shaped elastic pin; wherein, the special-shaped hole positioning column and the elastic pin are used to locate the workpiece to be processed; the support column is used to support the workpiece, so that the workpiece is placed horizontally;

The other side of the support plate is equipped with a corner cylinder; the cylinder shaft of the corner cylinder is connected with a pressure rod; the top of the pressure rod is fixed on a side facing the support plate; wherein, the pressure The top end of the rod is the end of the pressure rod away from the cylinder shaft;

When clamping the workpiece, the workpiece is placed on the support column, and the special-shaped hole of the workpiece is aligned with the sleeve on the special-shaped hole positioning column, so that the rough embryonic hole of the workpiece is aligned with the sleeve On the elastic pin; start the corner cylinder, the corner cylinder drives the pressure rod to rotate above the workpiece, and the corner cylinder then controls the pressure rod to press down until the pressing block presses the The workpiece, the rough blank hole of the workpiece is tightly sleeved on the outer wall of the elastic pin.

Preferably, two corner cylinders are installed on the other side of the support plate;

After the corner cylinder is started, the corner cylinder drives the pressure rod to rotate 90 degrees until the pressure block is directly above the support column; the corner cylinder then controls the pressure rod to press down until the A pressing block compresses the workpiece.

Preferably, the support columns include a first support column and a second support column;

The rough blastopore positioning member is arranged between the first support column and the second support column;

After the workpiece is clamped, the special-shaped hole positioning column and the second support column are respectively located at two ends of the workpiece.

Preferably, the rough blastopore positioning member also includes a columnar pin fixing seat; the elastic pin is fixed on the pin fixing seat; the height of the pin fixing seat is smaller than the height of the support column; the The height of the coarse blastopore positioning member is greater than the height of the support column;

The elastic pin is in the shape of a truncated cone with a narrow top and a wide bottom;

The diameter of the upper circular surface of the elastic pin is smaller than the aperture of the rough embryo hole; the diameter of the lower circular surface of the elastic pin is larger than the aperture of the rough embryo hole;

When the pressing block presses the workpiece, the support column is in close contact with the lower surface of the workpiece, and the rough hole is tightly set on the outer wall of the elastic pin.

Preferably, the pressure block and the pressure rod are fixedly connected by pins.

Preferably, the pneumatic clamp also includes a horizontal installation platform;

The support plate is fixed on the installation platform; the support plate is parallel to the installation platform.

Preferably, three equal-height support plate fixing columns are fixed on the installation platform;

The top of the support plate fixing column is fixedly connected to the support plate;

Wherein, the top end of the support plate fixing column is the end of the support plate fixing column away from the installation platform.

Preferably, the top end of the support plate fixing column and the support plate are fixedly connected by screws.

Preferably, the compact is made of cobalt-containing high-speed steel.

Preferably, the pneumatic clamp further includes a support column height adjustment member;

The height adjusting part of the support column is used to synchronously adjust the expansion and contraction of the first support column and the second support column, and then adjust the height of the first support column and the second support column, and make the first support column The heights of the first support column and the second support column are always consistent.

Beneficial effects of the utility model: the pneumatic clamp of the utility model is used instead of the traditional manual clamping method, and the irregular hole and the rough embryo hole of the workpiece are aligned and placed on the clamp to realize preliminary positioning, and then through the corner The cylinder can quickly clamp the workpiece, the clamping is firm and reliable, the centering precision is high, and the labor intensity is greatly reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a three-dimensional structural diagram of a pneumatic clamp provided by an embodiment of the present invention from a front perspective.

Fig. 2 is a three-dimensional structural view of the pneumatic clamp provided by the embodiment of the present invention from the perspective of the rear side.

In the picture:

100, installation platform; 110, support plate fixing column; 200, support plate; 210, special-shaped positioning piece; 211, special-shaped hole positioning column; 220, support column; Corner cylinder; 241, pressing rod; 242, briquetting block; 300, workpiece; 301, special-shaped hole; 302, rough embryo hole.

detailed description

In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment, Apparently, the embodiments described below are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Please refer to FIG. 1 and FIG. 2 , the present embodiment provides a pneumatic clamp, which includes a horizontal installation platform 100 .

A support plate 200 is fixed to the support plate on the installation platform 100 ; the support plate 200 is kept parallel to the installation platform 100 .

Specifically, at least three support plate fixing columns 110 of equal height are fixed on the installation platform 100; Connection; wherein, the top of the support plate fixing column is the end of the support plate fixing column away from the installation platform, that is, the upper end of the support plate fixing column 110 in Figure 1; the bottom end of the support plate fixing column 110 is the The other end opposite to the top of the support plate fixing column 110 is the lower end of the support plate fixing column 110 in FIG. 1 . Preferably, the top end of the support plate fixing column 110 and the support plate 200 are fixedly connected by screws.

Optionally, a fixing column height adjusting member is provided on the installation platform 100 for synchronously adjusting the heights of the at least three supporting plate fixing columns 110 ; in this embodiment, the number of supporting plate fixing columns 110 is three.

One side of the support plate 200 is fixed with a special-shaped positioning piece 210 , a rough blastohole positioning piece 230 and two support columns 220 of equal height. In this embodiment, the support columns 220 include a first support column (the support column 220 on the left side of FIG. 1 ) and a second support column (the support column 220 on the right side of FIG. 1 ); Between a support column and the second support column; after the workpiece 300 is clamped, the special-shaped positioning member 210 and the second support column are respectively arranged at both ends of the workpiece 300 .

Specifically, the special-shaped positioning member 210 is provided with a special-shaped hole positioning post 211 that matches the special-shaped hole 301 of the workpiece 300, and the rough hole positioning member 230 is provided with a tapered elastic pin 231; wherein, the elastic pin 231 is made of elastic material. The special-shaped hole positioning column 211 and the elastic pin 231 are used to locate the workpiece 300 to be processed; the two support columns 220 of equal height are used to support the workpiece 300 so that the workpiece 300 is placed horizontally.

The other side of the support plate 200 is equipped with a corner cylinder 240; the cylinder shaft of the corner cylinder 240 is connected with a pressure rod 241; the top of the pressure rod 241 is fixed with a pressure block 242 facing the side of the support plate 200; wherein, the pressure rod 241 The top end is the end of the compression rod 241 away from the cylinder shaft.

When clamping the workpiece 300, the workpiece 300 is placed on the support column 220, so that the special-shaped hole 301 of the workpiece 300 is aligned and set on the special-shaped hole positioning column 211, so that the rough blank hole 302 of the workpiece 300 is aligned and set on the elastic pin 231 Top: start the corner cylinder 240, the corner cylinder 240 drives the pressure rod 241 to rotate above the workpiece 300, the corner cylinder 240 then controls the pressure rod 241 to press down, and drives the pressure block 242 to move toward the workpiece 300 until the pressure block 242 contacts and compresses the workpiece 300 At this time, the rough blank hole 301 of the workpiece 300 is tightly fitted on the outer wall of the elastic pin 231 , further restricting the shaking or displacement of the workpiece 300 .

Preferably, two corner cylinders 240 are installed on the other side of the support plate 200 .

Specifically, after the corner cylinder 240 is started, the corner cylinder 240 drives the pressure rod 241 to rotate 90 degrees until the pressure block 242 is directly above the support column 220; the corner cylinder 240 controls the pressure rod 241 to press down until the pressure block 242 contacts and press Tight workpiece 300.

More specifically, the coarse blasthole positioning member 230 also includes a columnar pin fixing seat; the elastic pin 231 is fixed on the pin fixing seat, and the pin fixing seat is fixed on the support plate 200; the pin fixing seat The height is less than the height of the support column 220;

In the present embodiment, the elastic pin 231 is a truncated cone with a narrow top and a wide bottom; the diameter of the upper circular surface of the elastic pin 231 is smaller than the aperture of the rough embryo hole 302 (the rough embryo hole is a circular hole, and the aperture is its diameter); The diameter of the lower circular surface of 231 is greater than the aperture of rough embryohole 302.

When the pressing block 242 presses the workpiece 300 , the support column 220 is close to the lower surface of the workpiece 300 , and the rough blank hole 302 is tightly sleeved on the outer wall of the elastic pin 231 .

In this embodiment, the pressing block 242 and the pressing rod 241 are fixedly connected by pins. Preferably, the compact 242 is made of cobalt-containing high-speed steel.

Preferably, the pneumatic clamp further includes a support column height adjustment member (not shown in the figure); the support column height adjustment member is used to synchronously adjust the expansion and contraction of the first support column and the second support column, and then The heights of the first support column and the second support column are adjusted, and the heights of the first support column and the second support column are always kept consistent.

The pneumatic clamp proposed in this embodiment is used to assist CNC (Computer numerical control, numerically controlled machine tool) processing. It replaces the traditional manual clamping method with better efficiency and effect. The rough blank hole is aligned and placed on the pneumatic fixture to achieve preliminary positioning of the workpiece 300, and then through the corner cylinder 240, the workpiece can be quickly clamped, the clamping is firm and reliable, the centering accuracy is high, and the labor intensity is greatly reduced.

In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front" and "backward" are based on the orientation or positional relationship shown in the drawings, and are only for convenience The present invention is described and the simplified description does not indicate or imply that the referred circuit or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation of the present invention.

In the description of the utility model, it can be understood that each component can also be replaced by other components with the same or similar functions, such as replacing the cylinder with a motor, which can also have the same or similar technical effects, and all should be used in this utility model. new type of protection.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still can Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model .

Claims (9)

1. A pneumatic clamp is characterized in that it comprises a support plate placed horizontally; One side of the support plate is fixed with a special-shaped positioning piece, a rough blastopore positioning piece and two support columns of equal height; a special-shaped hole positioning column is provided on the special-shaped positioning piece, and a cone Shaped elastic pin; wherein, the special-shaped hole positioning column and the elastic pin are used to locate the workpiece to be processed; the support column is used to support the workpiece, so that the workpiece is placed horizontally; The other side of the support plate is equipped with a corner cylinder; the cylinder shaft of the corner cylinder is connected with a pressure rod; the top of the pressure rod is fixed on a side facing the support plate; wherein, the pressure The top end of the rod is the end of the pressure rod away from the cylinder shaft; When clamping the workpiece, the workpiece is placed on the support column, and the special-shaped hole of the workpiece is aligned with the sleeve on the special-shaped hole positioning column, so that the rough embryonic hole of the workpiece is aligned with the sleeve On the elastic pin; start the corner cylinder, the corner cylinder drives the pressure rod to rotate above the workpiece, and the corner cylinder then controls the pressure rod to press down until the pressing block presses the The workpiece, the rough blank hole of the workpiece is tightly sleeved on the outer wall of the elastic pin. 2. The pneumatic clamp according to claim 1, wherein two corner cylinders are installed on the other side of the support plate; After the corner cylinder is started, the corner cylinder drives the pressure rod to rotate 90 degrees until the pressure block is directly above the support column; the corner cylinder then controls the pressure rod to press down until the A pressing block compresses the workpiece. 3. The pneumatic clamp according to claim 1, wherein the support column comprises a first support column and a second support column; The rough blastopore positioning member is arranged between the first support column and the second support column; After the workpiece is clamped, the special-shaped hole positioning column and the second support column are respectively located at two ends of the workpiece. 4. The pneumatic clamp according to claim 1, characterized in that, the rough blastohole positioning member also includes a columnar pin fixing seat; the elastic pin is fixed on the pin fixing seat; the pin is fixed The height of the seat is less than the height of the support column; the height of the rough blastopore positioning member is greater than the height of the support column; The elastic pin is in the shape of a truncated cone with a narrow top and a wide bottom; The diameter of the upper circular surface of the elastic pin is less than the aperture of the rough embryo hole; the diameter of the lower circular surface of the elastic pin is greater than the aperture of the rough embryo hole; When the pressing block presses the workpiece, the support column is in close contact with the lower surface of the workpiece, and the rough hole is tightly set on the outer wall of the elastic pin. 5 . The pneumatic clamp according to claim 1 , wherein the pressure block and the pressure rod are fixedly connected by pins. 6 . 6. The pneumatic clamp according to claim 1, further comprising a horizontal installation platform; The support plate is fixed on the installation platform; the support plate is parallel to the installation platform. 7. The pneumatic clamp according to claim 1, characterized in that three support plate fixing columns of equal height are fixed on the installation platform; The top of the support plate fixing column is fixedly connected to the support plate; Wherein, the top end of the support plate fixing column is the end of the support plate fixing column away from the installation platform. 8. The pneumatic clamp according to claim 7, wherein the top end of the support plate fixing column and the support plate are fixedly connected by screws. 9. The pneumatic clamp according to claim 3, further comprising a support column height adjustment member; The height adjusting part of the support column is used to synchronously adjust the expansion and contraction of the first support column and the second support column, and then adjust the height of the first support column and the second support column, and make the first support column The heights of the first support column and the second support column are always consistent.