CN213002088U - Pneumatic clamp - Google Patents

Abstract

The utility model discloses a pneumatic fixture, the work piece has been placed on this pneumatic fixture, the work piece bottom is formed with porose type structure, contains: a rack; the pneumatic assembly is provided with a support, a fixing block and a pneumatic gun; and the positioning disc is provided with a disc body and a limiting part detachably connected to the disc body. Replace artifical the punching through pneumatic subassembly, the efficiency of trompil and precision are improved, the cooperation setting of punching press first and punching press first two simultaneously, make workpiece surface can set up the pinhole that has two symmetries, effectual size uniformity and the structural stability after having improved the later stage assembly stop pin, and this kind of pneumatic clamp need not to implement the fixed connection of fasteners such as bolt to the work piece, spacing portion through setting up the pass structure adaptation with the work piece bottom alright implement effectively fixedly, workpiece offset or drunkenness scheduling problem can not take place at the in-process of punching press, structural stability is high, equipment low in cost and maintenance cost are low, be applicable to the efficient use in production of enterprise.

Description

Pneumatic clamp

Technical Field

The utility model relates to a trompil device indicates a pneumatic fixture through pneumatic rifle trompil especially.

Background

Traditional wheel hub internally mounted has the bearing, in order to realize bearing and wheel hub's relatively fixed, what take is to set up a pinhole and also coaxial on the bearing lateral surface and set up integrated into one piece's notch when running through wheel hub machined surface thickness at wheel hub's lateral surface, connect the notch implementation and fix after running through wheel hub thickness with the stop pin, current trompil mode is comparatively simple, generally, the enterprise adopts the manual punching of operative employee and connects in the stop pin in order to save manufacturing cost, though save the trompil equipment fund that the introduction is high and relevant equipment maintenance fund, but the problem brought simultaneously is, the unable structure that realizes of pinhole that sets up on the wheel hub is unified, can have the size deviation because of manual operation brings between each work piece, further reduction product quality.

Therefore, there is a need for a new pneumatic clamp to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic fixture utilizes pneumatic subassembly and folder to act on the machined surface of work piece simultaneously, processes out a set of symmetry on the machined surface of messenger's work piece and sets up the pass structure.

According to the utility model discloses an embodiment provides a pneumatic fixture, has placed the work piece on this pneumatic fixture, the work piece bottom is formed with porose type structure, contains: a gantry having a deck and a track mounted on the deck; the clamping piece is provided with a base detachably connected to the table top and a plate fixedly connected to the base, and a first stamping head is mounted on one side of the plate; the pneumatic assembly is provided with a support, a fixing block and a pneumatic gun, the support is arranged on the table board and used for fixing the tail of the pneumatic gun, the fixing block is arranged on the table board and used for fixing the front end part of the pneumatic gun, the output end of the pneumatic gun is provided with a second stamping head, the second stamping head and the first stamping head are arranged on the same axis and enable a stamping head part to be arranged oppositely, and the axes of the first stamping head and the second stamping head are arranged in parallel with the track; the positioning disc is provided with a disc body and a limiting part detachably connected to the disc body, the disc body is connected to the rail in a sliding mode, the limiting part protrudes out of the upper surface of the disc body, and the outline of the outer ring of the limiting part is matched with the hole type structure of the bottom of the workpiece.

As an optional technical scheme, two parallel rails are mounted on the table top, a positioning seat is further mounted on the table top between the two rails, a positioning hole with an upward opening is formed in the positioning seat, the height of the horizontal plane of the positioning seat is smaller than or equal to that of the horizontal planes of the two rails, and bolts for positioning a clamping piece are respectively arranged on two sides of the positioning seat.

As an optional technical scheme, two ends of the track are respectively provided with a limiting block fixedly connected to the upper end face of the track.

As an optional technical scheme, a positioning element is arranged on the end face of the base, a through hole penetrating the positioning element and the thickness of the base is formed in a vertical central axis of the positioning element, and a limiting pin inserted into the through hole and connected into the positioning hole at the end part is arranged on the clamping element.

As an optional technical scheme, the positioning piece is arranged to be a vertical cylindrical structure, a limiting groove used for limiting the circumferential rotation of the limiting pin is formed in the positioning piece, and a limiting column matched with the limiting groove is installed on the limiting pin.

As an alternative solution, the end of the first stamping head is mounted on the plate in an axially adjustable manner.

As an optional technical solution, a central point of the cross section to be processed of the workpiece is located on an axis of the first stamping head and the second stamping head.

Compared with the prior art, the utility model provides a pneumatic fixture, replace the manual work through pneumatic component and punch, trompil efficiency and precision have been improved, the cooperation setting of first punching press and first punching press second simultaneously, make the workpiece surface can set up the pinhole that has two symmetries, effectual size uniformity and the structural stability after the later stage assembly stop pin that has improved, and this kind of pneumatic fixture need not to implement the fixed connection of fasteners such as bolt to the work piece, spacing portion through setting up the pass structure adaptation bottom the work piece alright implement effectively fixedly, work piece skew or drunkenness scheduling problem can not take place at the in-process of punching press, structural stability is high, equipment low in cost and maintenance cost are low, be applicable to the efficient use in production of enterprise.

Drawings

FIG. 1 is a diagram showing a state of use of the pneumatic clamp of the present invention;

FIG. 2 is a schematic view of the rack structure of the present invention;

FIG. 3 is a schematic view of the structure of the clamp of the present invention;

FIG. 4 is a schematic structural view of the pneumatic assembly of the present invention;

FIG. 5 is a schematic view of the positioning plate of the present invention;

FIG. 6 is a schematic view of the structure of the position-limiting portion of the present invention;

FIG. 7 is a sectional view and a partial enlarged view of the assembled rear side of the workpiece according to the present invention;

FIG. 8 is a diagram illustrating a state of use of the stamping head according to the present invention;

fig. 9 is a schematic view of the stop pin connection of the present invention;

fig. 10 is a schematic view of the structure of the limit pin of the present invention.

In the figure: 1 rack, 11 tracks, 111 first limit block, 112 second limit block, 12 table top, 13 bolts, 131 nuts, 14 positioning seats, 141 positioning holes, 2 clamping pieces, 21 plates, 211 rib plates, 22 bases, 221 first limit grooves, 222 first through holes, 23 first punching heads, 231 locking pieces, 24 positioning pieces, 241 second limit grooves, 242 second through holes, 25 first sliding blocks, 3 pneumatic components, 31 pneumatic guns, 311 second punching heads, 32 fixing blocks, 321 third through holes, 322 connecting plates, 3221 fourth through holes, 33 supports, 331 bottom plates, 3311 fifth through holes, 4 workpieces, 41 positioning points, 42 tapered holes, 5 positioning discs, 51 limit parts, 511 disc bodies, 512 bolt holes, 52 second sliding blocks, 6 limit pins, 61 holding parts, 62 pin bodies, 63 limit columns, 7 bearings and 8 stop pins.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1 to 10, a pneumatic clamp according to an embodiment of the present invention includes a table frame 1, a clamp pneumatic assembly 3, and a positioning plate 5. The gantry 1 has a table top 12 and a rail 11 mounted on the table top 12; the clamping piece 2 is provided with a base 22 detachably connected to the table top 12 and a plate 21 fixedly connected to the base 22, and a first stamping head 23 is installed on one side of the plate 21; the pneumatic assembly 3 is provided with a support 33, a fixed block 32 and a pneumatic gun 31, the support 33 is installed on the table top 12 and fixes the tail part of the pneumatic gun 31, the fixed block 32 is installed on the table top 12 and fixes the front end part of the pneumatic gun 31, the output end of the pneumatic gun 31 is provided with a second stamping head 311, the second stamping head 311 and the first stamping head 23 are arranged on the same axis and enable the stamping head parts to be arranged oppositely, in the implementation, the stamping head parts of the first stamping head 23 and the second stamping head 311 both point to the surface to be processed of the workpiece 4, and the axes of the first stamping head 23 and the second stamping head 311 are arranged in parallel with the rail 11; the positioning disc 5 is provided with a disc body 511 and a limiting part 51 detachably connected to the disc body 511, the disc body 511 is connected to the track 11 in a sliding mode, the limiting part 51 protrudes out of the upper surface of the disc body 511, and the outline of the outer ring of the limiting part 51 is matched with the hole type structure of the bottom of the workpiece 4. It should be noted that the axes of the first punch head 23 and the second punch head 311 adopted in the present embodiment are parallel to the rail 11, and those skilled in the art can understand that, in combination with the above-mentioned sliding connection of the positioning plate 5 on the rail 11, the workpiece 4 can move along the axial direction of the first punch head 23 and the second punch head 311 after being placed on the positioning plate 5.

Referring to fig. 7, in the implementation, after the operator places the workpiece 4 on the positioning plate 5, the bottom hole pattern of the workpiece 4 is adapted to the outer ring contour of the limiting portion 51, and those skilled in the art can understand that the outer ring contour completely fits the bottom hole pattern of the workpiece 4, and this arrangement enables the workpiece 4 to be quickly positioned by using its own structure. Meanwhile, adjusting the position of the workpiece 4 on the track 11, enabling the surface to be processed of the workpiece 4 to be attached to the punching ends of the first punching head 23 and the second punching head 311, applying a certain force to the clamping piece 2, respectively leaving two marking points corresponding to the first punching head 23 and the second punching head 311 on the surface to be processed of the workpiece 4, and chiseling two positioning points 41 on the two marking points in a state of stabilizing the workpiece 4; those skilled in the art can understand that the two positioning points 41 are used for giving an axial positioning effect to the first punch head 23 and the second punch head 311 when the first punch head 23 and the second punch head 311 are just in contact with a to-be-machined surface of the workpiece 4 in the process of implementing relative punching, so that the failure of the opposite punching caused by the arc surface of the workpiece 4 is prevented; after the positioning point 41 is drilled, the position of the workpiece 4 on the rail 11 is adjusted, and it should be noted that, the first punch head 23 may also perform its axial position adjustment, and the first punch head 23 and the second punch head 311 are just abutted into the positioning point 41, at this time, the pneumatic assembly 3, the workpiece 4, and the clamp 2 are relatively fixed, the pneumatic gun 31 is started, the second punch head 311 retracts for a certain stroke and stores the force, at this time, the surface to be processed of the workpiece 4 is abutted to the first punch head 23, but has a relative distance with the second punch head 311, the second punch head 311 is fed into the positioning point 41 under the force, since the workpiece 4 is slidably connected to the rail 11, so that the first punch head 23 applies the same and opposite force to the surface to be processed during the feeding process, a person skilled in the art can understand that, under the interaction of the forces, and the workpiece 4 can slide on the rail 11, the depth of the pin holes formed in the two sides of the workpiece 4 is the same. In this embodiment, effectual interact that has utilized power combines can follow the gliding work piece 4 of 11 directions in track for two coaxial and the same pinhole of degree of depth are established under the effect of one end application of force, effectual practicality and the high efficiency that has improved. It should be noted that, in this embodiment, the specific structure of the workpiece 4 is not limited, and generally, the positioning may be implemented by applying to a wheel hub and a bearing installed inside the wheel hub, in the implementation, the depth of the pin hole formed may be determined by the stroke distance adjusted by the pneumatic gun 31, the internal structure of the pneumatic gun 31 is not described in detail in this embodiment, and in the application to a wheel hub, the following implementation is specifically implemented;

a bearing 7 is installed inside the hub (the hub is the workpiece 4 in the embodiment), another bearing is installed at the inner ring part at the bottom of the hub, the bearing is provided with a tapered hole 42, after the hub is placed on the positioning disc 5, the tapered hole 42 is in adaptive connection with the limiting part 51, positioning is implemented in this way, pin holes with two symmetrical sides need to be processed on the surface of the positioned hub, the pin holes penetrate through the thickness of the surface to be processed of the hub and extend to the outer edge surface of the bearing 7 to form notches, pin holes are formed after the first stamping head 23 and the second stamping head 311 are subjected to opposite stamping, and the operation can be completed by filling the stop pins 8 into the pin holes, as shown in fig. 8 and 9, the positioning points 41 for pre-positioning are arranged on the surface of the hub in fig. 8, and the pin holes are formed after the first stamping head 23 and the second stamping head 311 are subjected to opposite stamping; in fig. 9, the detent connection is completed by inserting the detent pin 8 into the hub and connecting it at the end into the end face of the bearing 7. The pneumatic clamp can open holes on the to-be-machined surface of the hub without fixedly connecting the hub (namely, fixing is not carried out through fixing pieces such as bolts), and is high in hole opening precision and controllable in stroke.

Referring to fig. 2 and 3, fig. 2 shows a schematic structural view of the gantry 1, and fig. 3 shows a schematic structural view of the clamp 2. Two rails 11 arranged in parallel are installed on a table top 12 of a rack 1, a positioning seat 14 is also installed on the table top 12 between the two rails 11, a positioning hole 141 with an upward opening is formed in the positioning seat 14, and the horizontal height of the positioning seat 14 is smaller than or equal to the horizontal height of the two rails 11, so that after the clamping piece 2 is connected, the positioning seat 14 does not generate a structural interference problem with the clamping piece 2, bolts 13 for positioning the clamping piece 2 are respectively arranged on two sides of the positioning seat 14, it is required to point out that two limiting grooves 221 matched with the positions of the bolts 13 are formed in a base 22 of the clamping piece 2, after the clamping piece 2 is assembled, the two bolts 13 are just positioned in the limiting grooves 221, meanwhile, nuts 131 are arranged at the tops of the bolts 13, and the fixing of the base 22 can be implemented by screwing the nuts 131, the nut 131 is positioned at the end face of the base 22. It should be noted that the clamping piece 2 further includes another two positioning structures, a first slider 25 is installed at the bottom of the clamping piece 2, the first slider 25 is adapted to the rail surface of the rail 11, after the clamping piece 2 is assembled to the position, the first slider 25 arranged at the bottom of the two sides can be connected to the two rails 11 in a matching manner, meanwhile, the first slider 25 is detachably connected to the base 22, a first through hole 222 is formed in the base 22, and the first slider 25 is connected to the first through hole 22 through a screw to be fixedly connected to the base 22; a positioning element 24 is arranged on the end face of the base 22, a through hole 242 penetrating the positioning element 24 and the base 22 is arranged on the vertical central axis of the positioning element 24, and a limit pin 6 inserted into the through hole 242 and connected into the positioning hole 141 at the end is arranged on the clamping element 2. In combination with the above, the clip 2 can be fixed by three positioning and combining modes, namely the bolt 13, the first slider 25 and the limit pin 6, so that the problem of looseness of the clip 2 in the process of implementing opposite punching of the first punch 23 and the second punch 311 is effectively prevented.

In addition, referring to fig. 10, in this embodiment, in order to further improve the positioning effect of the clip 2, the positioning element 24 is configured to be a vertical cylindrical structure, a limiting groove for limiting the circumferential rotation of the limiting pin 6 is formed on the positioning element 24, a limiting post 63 adapted to the limiting groove is mounted on the limiting pin 6, and it can be seen from fig. 3 in detail that, in fig. 3, the positioning element 24 is a vertical cylindrical structure and is provided with a second limiting groove 241, and meanwhile, the limiting post 63 is disposed on the limiting pin 6 matched with the second limiting groove; in practice, after the limit pin 6 is inserted into the second through hole 242, the end of the limit pin 6 is connected into the positioning hole 141, and the limit post 63 is also connected in the second limit groove 241 in a limiting manner, so that the limit pin 6 can further position the clamping element 2. It should be noted that, in order to facilitate the operator to take the stop pin 6 and prevent the stop pin from being placed incorrectly, in the embodiment, the stop pin 6 includes a pin body 62, a stop post 63 mounted on the pin body 62, and a holding portion 61 formed at an end of the pin body 62, in practice, for facilitating the taking, a surface of the holding portion 61 is a mesh surface structure to improve the frictional resistance of the holding.

Referring back to fig. 3, in the present embodiment, the end of the first stamping head 23 is axially adjustable and mounted on the plate 21, specifically, in order to achieve axial adjustment of the first stamping head 23, that is, after the clamping device 2 is fixed, the end of the first stamping head 23 needs to be attached to the end surface to be processed of the workpiece 4, so that the axial adjustment can meet the use requirement in the implementation, the end of the first stamping head 23 is processed with an external thread surface, the first stamping head 23 penetrates through the thickness of the plate 21 and is fixedly connected through the locking member 231, and when the axial length needs to be adjusted, the axial position of the first stamping head 23 is tightened.

Please refer to fig. 4, fig. 4 is a schematic structural diagram of the pneumatic assembly 3, which includes a pneumatic gun 31, a support 33 fixedly connected to the end of the pneumatic gun 31, and a fixing block 32 fixedly connected to the front end of the pneumatic gun 31, wherein the fixing block 32 is a triangle structure, and a through hole three 321 for passing through and stabilizing the end of the pneumatic gun 31 is formed on the body of the fixing block 32, meanwhile, a connecting plate 322 is fixedly arranged at the bottom of two sides of the fixing block 32, a through hole four 3221 is formed on the end surface of the fixing block, and the fixing block 32 is screwed into the through hole four 3221 through a bolt and the like, and is fixed to the table top 12. The support 33 is designed to be an L-shaped structure, a bottom plate 331 is formed to be fixedly connected to the table top 12, a five through hole 3311 is formed in the bottom plate 331, and the support 33 is fixedly connected to the table top 12 by connecting parts such as bolts into the five through hole 3311.

Referring to fig. 5 and 6, fig. 5 is a schematic structural view of the positioning disc 5, and fig. 6 is a schematic structural view of the limiting portion 51, in this embodiment, the limiting portion 51 is detachably mounted on the upper end surface of the positioning disc 5, the limiting portion 51 is a convex structure and is used for adapting to a hole pattern structure at the bottom of the workpiece 4, meanwhile, a second sliding block 52 for slidably connecting to the rail 11 is further mounted at the bottom of the positioning disc 5, it should be noted that, in the implementation, the limiting portion 51 may adapt to different sizes according to the hole pattern size at the bottom of the workpiece 4, and this embodiment is not limited; for the convenience of disassembly and assembly, the limiting part 51 is of a disc body 511 structure, a bolt hole 512 is further formed in the end face of the disc body 511, a bolt used for connecting the disc body 511 is installed in the bolt hole 512, and the limiting part 51 is fixedly connected with the positioning disc 5 through the bolt.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (7)

1. A pneumatic clamp, the work piece has been placed on this pneumatic clamp, the work piece bottom is formed with porose type structure, its characterized in that contains:

a gantry having a deck and a track mounted on the deck;

the clamping piece is provided with a base detachably connected to the table top and a plate fixedly connected to the base, and a first stamping head is mounted on one side of the plate;

the pneumatic assembly is provided with a support, a fixing block and a pneumatic gun, the support is arranged on the table board and used for fixing the tail of the pneumatic gun, the fixing block is arranged on the table board and used for fixing the front end part of the pneumatic gun, the output end of the pneumatic gun is provided with a second stamping head, the second stamping head and the first stamping head are arranged on the same axis and enable a stamping head part to be arranged oppositely, and the axes of the first stamping head and the second stamping head are arranged in parallel with the track; and

the positioning disc is provided with a disc body and a limiting part detachably connected to the disc body, the disc body is connected to the rail in a sliding mode, the limiting part protrudes out of the upper surface of the disc body, and the outer ring profile of the limiting part is matched with the hole type structure at the bottom of the workpiece.

2. A pneumatic clamp according to claim 1, wherein: the table top is provided with two parallel rails, a positioning seat is further arranged on the table top between the two rails, the positioning seat is provided with a positioning hole with an upward opening, the height of the horizontal plane of the positioning seat is smaller than or equal to that of the horizontal planes of the two rails, and bolts for positioning a clamping piece are arranged on two sides of the positioning seat.

3. A pneumatic clamp according to claim 1, wherein: and two ends of the track are respectively provided with a limiting block fixedly connected to the upper end surface of the track.

4. A pneumatic clamp according to claim 1, wherein: the end face of the base is provided with a positioning piece, a through hole penetrating through the positioning piece and the thickness of the base is formed in a vertical central axis of the positioning piece, and the clamping piece is provided with a limiting pin inserted into the through hole and connected into the positioning hole at the end part.

5. A pneumatic clamp according to claim 4, wherein: the locating piece is of a vertical cylindrical structure, a limiting groove used for limiting the circumferential rotation of the limiting pin is formed in the locating piece, and a limiting column matched with the limiting groove is installed on the limiting pin.

6. A pneumatic clamp according to claim 1, wherein: the tail end of the first stamping head is axially adjustably mounted on the plate.

7. A pneumatic clamp according to claim 1, wherein: and the central point of the cross section to be processed of the workpiece is positioned on the axes of the first stamping head and the second stamping head.

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