CN217475804U - Clamping tool for enlarging installation space and facilitating installation of compressor exhaust seat - Google Patents

Abstract

The utility model belongs to the technical field of the parts machining frock and specifically relates to a enlarge tight frock of clamp of installation space compressor exhaust seat installation of being convenient for, include: a lower positioning device and a clamping device; the clamping device includes: a fixing plate; a moving plate located between the fixed plate and the lower positioning device; the clamping block is arranged on the fixing plate and protrudes downwards out of the bottom surface of the fixing plate; a guide rod extending longitudinally is arranged on the fixed plate, and the movable plate is arranged on the guide rod in a sliding manner; the moving plate is connected with a driving part, and the driving part adjusts the distance between the moving plate and the lower positioning device; a locking device is arranged between the fixed plate and the movable plate; when clamping, the locking device locks the position of the clamping block, so that the clamping block applies downward force to act on the exhaust seat, and the exhaust seat is clamped on the lower positioning device. The utility model discloses set up ability longitudinal movement's movable plate in lower part positioner top, adjust the space of lower part positioner top, the exhaust seat installation location of being convenient for.

Description

Clamping tool for enlarging installation space and facilitating installation of compressor exhaust seat

Technical Field

The utility model belongs to the technical field of the parts machining frock and specifically relates to a enlarge tight frock of clamp of installation space compressor exhaust seat installation of being convenient for.

Background

In the compressor, the exhaust seat belongs to a high-precision accessory, the processing precision of the exhaust seat directly influences the working efficiency of the compressor, and the clamp is one of main reasons influencing the processing precision, so that higher positioning requirements are put on the clamp required by processing. And the main machined surfaces of the compressor discharge seat are the front and rear end surfaces for assembly with the fuselage and other fittings.

In the existing exhaust seat fixture, for example, chinese utility model patent (publication No. CN212146073U, published as 20201215) discloses a multi-station tool for an exhaust seat, which comprises a base, at least two stations are arranged on the base, a pressing assembly and a plurality of positioning supports are arranged on the stations, the plurality of positioning supports are arranged around the stations, positioning pieces are arranged at the upper ends of the positioning supports, one end of each positioning piece is fixed with the corresponding positioning support, the pressing assembly comprises a screw rod and a pressing plate for pressing the workpiece, the bottom of the screw rod is connected with the base, and the pressing plate is connected with the upper end of the screw rod. The utility model provides a multistation frock of exhaust seat can hold a plurality of work pieces simultaneously, and the dismouting just once can accomplish a plurality of work pieces of processing, has improved production efficiency.

However, the exhaust seat tool has the following problems:

1. with the axis of exhaust seat along vertically fixing a position for after the location is accomplished, only can process to that face that lies in the top, to the exhaust seat of this application, can not process preceding terminal surface and rear end face simultaneously, need process a face after, dismantle, install again and just can process the another side. That is, the positioning manner is not reasonable, resulting in low processing efficiency.

2. When going up unloading to the exhaust seat, though can lateral shifting screw rod, avoid taking place to interfere with the exhaust seat to the screw rod need not dismantle, has simplified the dismouting step, but the clamp plate on the screw rod is very limited at the distance that vertical direction was adjusted, leaves the installation space of exhaust seat for too little, leads to in the positioner of the entering below that the exhaust seat can not be smooth.

SUMMERY OF THE UTILITY MODEL

For solving the problem that above-mentioned exhaust seat installation space is little, the inconvenient installation of exhaust seat, the utility model aims at providing an enlarge installation space and be convenient for the tight frock of clamp of compressor exhaust seat installation, be provided with fixed plate and movable plate in lower positioner's top, the movable plate can be in vertical direction relative movement to the installation of the exhaust seat of being convenient for, and when pressing from both sides tightly, lock the position of movable plate through locking device, press from both sides tight piece clamp on the movable plate on the exhaust seat, make the exhaust seat pressed from both sides tightly in lower positioner.

For the purpose of the utility model, the following technical proposal is adopted for implementation:

the utility model provides an enlarge tight frock of clamp of installation space compressor exhaust seat installation of being convenient for, includes: the lower positioning device and the clamping device are arranged above the lower positioning device; the clamping device includes: a fixing plate maintaining a relatively constant position with respect to the lower positioning device; the moving plate is positioned between the fixed plate and the lower positioning device; the clamping block is arranged on the fixing plate and protrudes downwards out of the bottom surface of the fixing plate; the fixed plate is provided with a guide rod extending longitudinally, and the movable plate is arranged on the guide rod in a sliding manner; the moving plate is connected with a driving part for driving the moving plate to move in the vertical direction, and the driving part adjusts the distance between the moving plate and the lower positioning device; a locking device used for relatively locking the positions between the fixed plate and the movable plate when the fixed plate and the movable plate are clamped is arranged between the fixed plate and the movable plate; when clamping, the locking device locks the position of the clamping block, so that the clamping block applies downward force to act on the exhaust seat, and the exhaust seat is clamped on the lower positioning device.

Preferably, the locking device comprises: a guide sleeve which is arranged on the fixing plate and is internally provided with a guide hole which is longitudinally penetrated; the ejector rod is positioned in the guide hole and moves along the axis direction of the guide hole; the locking assembly is arranged on the guide sleeve and locks the position of the ejector rod and the guide hole relatively when the ejector rod is clamped; the position of the ejector rod corresponds to the moving plate, and when the clamping is carried out, the bottom of the ejector rod is abutted against the moving plate or the clamping block, so that the position of the clamping block is fixed.

Preferably, the moving plate is provided with a mounting hole for mounting the clamping block, and the clamping block is movably arranged in the mounting hole along the axial direction of the mounting hole; the position of the mandril corresponds to the position of the clamping block.

Preferably, the inside of mounting hole is provided with blocks the face, blocks the face and presss from both sides tight piece cooperation, prevents to press from both sides tight piece and fall out from the mounting hole below.

Preferably, a cushion block is detachably arranged between the bottom of the ejector rod and the top of the clamping block, and when the clamping is carried out, the cushion block is arranged between the ejector rod and the clamping block, and the force of the ejector rod is transmitted to the clamping block through the cushion block; when loading and unloading are carried out, the cushion block is taken out from between the ejector rod and the clamping block, and a space for the moving plate to move upwards is reserved.

Preferably, the bottom of the ejector rod is provided with a positioning end, the top of the cushion block is provided with a positioning groove which is recessed downwards, and when the ejector rod is matched with the cushion block, the positioning end is positioned in the positioning groove.

Preferably, the locking assembly comprises a nut arranged on the guide sleeve and a screw rod arranged on the nut, the screw rod is longitudinally arranged, the lower end of the screw rod is connected with the upper end of the ejector rod, and the screw rod rotates in the nut to drive the ejector rod to move up and down.

Preferably, the upper end of the ejector rod is provided with a connecting port which is an inverted T-shaped connecting groove; the lower end of the screw rod is provided with a radially contracted contraction section which is matched in the connecting port, so that the screw rod cannot drive the ejector rod to rotate when rotating.

To sum up, the utility model has the advantages that through the movable plate that sets up ability longitudinal movement in lower part positioner's top, adjust the space of lower part positioner top, the installation location of the exhaust seat of being convenient for. When clamping, the position of the clamping block on the moving plate is fixed through the locking device, so that the clamping force is ensured, and the processing quality is ensured.

Drawings

Fig. 1 is a schematic structural view of an exhaust seat.

FIG. 2 is a schematic view of the bottom of the exhaust seat.

Fig. 3 and 4 are schematic structural views of the lower positioning device.

Fig. 5 and 6 are schematic structural views of the exhaust seat tool.

Fig. 7 and 8 are schematic structural views of the exhaust seat mounted on the tool.

FIG. 9 is a schematic view of the tooling with the clamp raised and the dunnage axis removed.

Fig. 10 is an exploded view of the locking device.

Fig. 11 is a cross-sectional view of the tooling.

Detailed Description

A compressor exhaust seat machining clamp is used for positioning and clamping an exhaust seat of a compressor and facilitating further machining of the exhaust seat. The fixture comprises a lower positioning device 10 for positioning the exhaust seat and a clamping device 20 for clamping the exhaust seat, wherein the lower positioning device 10 is positioned by adopting a six-point positioning principle, and in order to describe how to realize positioning more clearly, the basic structure of the exhaust seat is described first.

As shown in fig. 1 and 2, the exhaust seat 50 includes a front end surface 52 located at the front side of the exhaust seat body 51 and a rear end surface 53 located at the rear side of the exhaust seat body 51, and the front end surface 52 and the rear end surface 53 both extend outwards around the periphery of the exhaust seat body 51, which is particularly embodied at the lower middle side of the exhaust seat body 51, for example, in fig. 2, the exhaust seat body 51 is relatively recessed and located between the front end surface 52 and the rear end surface 53, and a recessed area 54 is formed at the recessed portion. In the depressed area 54, an outer surface 511 of the exhaust seat body 51 at a lower position is formed by connecting a plurality of circular arcs. As shown in fig. 1, a platform 512 extending substantially in a horizontal direction is disposed on a top of the exhaust seat body 51, a substantially vertical connecting surface 513 is disposed on left and right sides of the platform 512, and the connecting surface 513 and the platform 512 are transited by an arc surface 514.

As shown in fig. 1 and 2, the front end surface 52 has a ring of slightly outwardly extending flanges 521, a relatively flat rear wall surface 522 is formed on the rear side of the flanges 521, a first transition surface 523 formed on one side (for example, the left side in fig. 1) of the bottom of the flanges 521 and connected to a circular arc by a straight line is formed, and a first plane 524 protruding downward is formed on the other side (for example, the right side in fig. 1) of the bottom of the flanges 521.

As shown in fig. 1 and 2, the rear end surface 53 has a ring of thin plates 531 extending outward for a certain distance, the front side of the thin plates 531 forms a relatively flat front wall 532, one side (for example, the left side in fig. 1) of the bottom of the thin plates 531 forms a second transition surface 533 connected by a straight line and a circular arc, the other side (for example, the right side in fig. 1) of the bottom of the thin plates 531 forms a second plane 534 protruding downward, and the second plane 534 is provided with oil return holes 535.

When the exhaust seat 50 is subsequently machined, the front end surface 52 and the rear end surface 53 are mainly machined, so that when positioning, the axis of the exhaust seat 50 is not arranged along the longitudinal direction, but should be arranged along the transverse direction, so that the front end surface 52 and the rear end surface 53 face the front side and the rear side respectively, and the machining of the front end surface 52 and the rear end surface 53 is facilitated.

As shown in fig. 3 and 4 (best seen in both fig. 7 and 8), the lower positioning device 10 includes: a first front side bearing 11 for positioning the first transition surface 523 from below; a second front side bearing 12 for positioning the first plane 524 from below; a first rear side bearing 13 for positioning the second transition surface 533 from below; a second rear side bearing 14 for positioning the second plane 534 from below; two lateral supports 15 for positioning the rear wall surface 522 or the front wall surface 532 from the front-rear horizontal direction; and a side support 16 for positioning the outer surface 511 from the left-right horizontal direction.

As can be seen from the six-point positioning principle, the first front side support 11, the second front side support 12, the first rear side support 13, and the second rear side support 14 cooperate with each other to position the bottom surface of the exhaust seat 50, i.e., to limit three degrees of freedom (specifically, translation in the longitudinal direction, rotation in the front-rear axis direction, and rotation in the left-right axis direction) of the exhaust seat 50. The two lateral supports 15 position the exhaust seat 50 from one of the horizontal directions (understood as the front-rear direction in fig. 3), i.e., restrict two degrees of freedom of the exhaust seat 50 (specifically, translation in the front-rear direction and rotation in the up-down axis direction). One side support 16 positions the exhaust seat 50 from another horizontal direction (understood as the left-right direction in fig. 3), limiting the last degree of freedom (specifically translation in the left-right direction), at which time the exhaust seat 50 is fully positioned.

In a preferred embodiment, as shown in FIG. 3, the first anterior support 11 and the second anterior support 12 are positioned in a planar manner to improve the positioning accuracy. The first front support 11 is slightly lower than the second front support 12 in order to match the profile of the front face 52 of the exhaust seat 50. In order to further improve the positioning accuracy, both the first front side bearing 11 and the second front side bearing 12 may be provided on one front side support plate 101, which facilitates the machining of the first front side bearing 11 and the second front side bearing 12 and also ensures the positional accuracy of the first front side bearing 11 and the second front side bearing 12.

As shown in fig. 4, the first rear support 13 and the second rear support 14 both use ball head support nails disposed vertically upward, and when positioning, the top end of the second rear support 14 is located in the oil return hole 535 of the exhaust seat 50 to improve the positioning accuracy. The first rear side support 13 is slightly lower in height than the second rear side support 14 in order to match the contour of the rear end surface 53 of the exhaust seat 50. The first rear side bearing 13 and the second rear side bearing 14 are mounted together on a rear side support plate 102.

As shown in fig. 3, a middle support plate 103 is provided between the front support plate 101 and the rear support plate 102, and the middle support plate 103 is higher than the front support plate 101 and the rear support plate 102. The lateral supports 15 are mounted on the central support plate 103 in the front-rear direction, and the two lateral supports 15 are distributed on the central support plate 103 in the left-right direction. Ball head support nails are adopted for the two transverse supports 15. In fig. 3, two side supports 16 are provided and are integrated with the support portions 1031 on the left and right sides of the upper end of the middle support plate 103, the support portions 1031 rise upward, and the inner side surfaces of the support portions 1031 position the exhaust seat 50 from the left and right sides. For better positioning of the exhaust seat body 51, the shape of the entire upper end surface 1032 of the middle support plate 103 matches the outer surface 511, and the upper end surface 1032 is shown in fig. 3 as having a shape formed by connecting a plurality of circular arcs. When the positioning of the exhaust seat 50 is completed, the outer surface 511 of the exhaust seat body 51 is just abutted on the upper end surface 1032 of the middle support plate 103.

As shown in fig. 5 and 6, the clamping device 20 includes four guide rods 21 arranged longitudinally, the lower positioning device 10 is located inside a rectangle formed by the four guide rods 21, a fixing plate 22 for fixing the guide rods 21 relatively is arranged on the top of the four guide rods 21, an air cylinder 23 is arranged longitudinally on the upper end surface of the fixing plate 22, a piston rod of the air cylinder 23 is arranged downwards and extends to the lower part of the fixing plate 22, a moving plate 24 is connected to the piston rod, the periphery of the moving plate 24 is slidably mounted on the four guide rods 21, and the moving plate 24 is controlled to move up and down by air intake and exhaust of the air cylinder 23. In order to clamp the exhaust seat 50, a clamping block 25 is provided on the moving plate 24, a lower end of the clamping block 25 downwardly protrudes from a bottom surface of the moving plate 24, and the position of the clamping block 25 corresponds to the lower positioning device 10, so that when the moving plate 24 moves downwardly, a bottom of the clamping block 25 contacts a top of the exhaust seat 50 and applies a force to the platform 512 to clamp the exhaust seat 50 downwardly on the lower positioning device 10.

In order to ensure the smooth movement of the moving plate 24, two cylinders 23 are provided and are parallel to each other, and the moving plate 24 is slidably disposed on the guide bar 21 through a linear bearing at the periphery. The cylinder 23 is used only for sliding the moving plate 24 up and down, so that it is feasible to replace it with other driving components, such as a motor driving a screw rod or a rack and pinion for transmission. Since the exhaust seat 50 has a certain width, two clamping blocks 25 are provided to secure the clamping, and both are used to press the platform 512 on the upper portion of the exhaust seat 50. It is foreseen by those skilled in the art that clamping of the exhaust seat 50 can also be achieved when there is only one clamping block 25.

As shown in fig. 7 and 8, it is noted that the exhaust seat 50 has a large height, and the lower positioning device 10 positions only the middle and lower portion of the exhaust seat 50, so that the middle and upper portion of the exhaust seat 50 is exposed above the lower positioning device 10 after the exhaust seat 50 is positioned in the lower positioning device 10, and the exhaust seat 50 is easily overturned when the middle and lower portion is subjected to an external force in the horizontal direction. In order to avoid this, the upper positioning device 30 for positioning the middle upper portion of the exhaust seat 50 is disposed at the bottom of the moving plate 24, but it should be understood that the upper positioning device 30 is disposed on the moving plate 24 as a preferred embodiment, and for example, the upper positioning device 30 may be slidably mounted on the guide bar 21.

As shown in fig. 6 in combination with fig. 7 and 8, the upper positioning device 30 includes two upper positioning blocks 31 distributed left and right and disposed opposite to each other, and the two upper positioning blocks 31 are respectively used for positioning left and right sides of the upper portion of the exhaust seat 50. A positioning surface 311 is formed on the inner side of the upper positioning block 31 (the side where the two upper positioning blocks 31 face each other), and the lower portion of the positioning surface 311 is a vertical plane extending in the longitudinal direction and used for positioning the connection surfaces 513 on the left and right sides of the exhaust seat body 51. The upper portion of the positioning surface 311 is an arc surface corresponding to the arc surface 514, so that the upper positioning block 31 can position the top of the exhaust seat 50 while positioning the exhaust seat 50 from the side, and further ensure the positioning accuracy of the exhaust seat 50.

As shown in fig. 6, each upper positioning block 31 is provided with an upper support 32 extending in the front-rear direction, and the upper support 32 is used for positioning a front wall 532 of the upper portion of the thin plate 531. And it is preferable that the upper support 32 position the front wall 532 and the lateral support 15 position the rear wall 522 so that both the front and rear sides of the exhaust seat 50 can be positioned to further avoid the occurrence of the overturning phenomenon.

The upper positioning block 31 and the upper support 32 are used to position the upper portion of the exhaust seat 50. Specifically, after the moving plate 24 moves downward, the upper positioning blocks 31 first contact the left and right sides of the exhaust seat 50 to position the left and right sides of the exhaust seat 50, then the upper portion of the inner positioning surface 311 of the upper positioning blocks 31 can also position the top of the exhaust seat 50, and then the upper portion of the exhaust seat 50 is manually abutted against the upper support 32, so that the front wall 532 of the exhaust seat 50 is tightly attached to the upper support 32, thereby ensuring that the exhaust seat 50 is effectively positioned and preventing overturning.

As shown in fig. 6, an operating handle 26 for controlling opening and closing of the selector valve in the cylinder 23 is provided on the fixed plate 22. The using process is as follows: when loading and unloading, the operating handle 26 is rotated to ventilate the cylinder 23, and the piston rod of the cylinder 23 moves upward to drive the moving plate 24 to slide upward, so that the clamping block 25 is far away from the lower positioning device 10. The space in the lower portion is increased to facilitate the installation of the exhaust seat 50 to the lower positioning device 10. When the exhaust seat 50 is installed in place, the operating handle 26 is rotated to cut off the air supply to the air cylinder 23, the piston rod of the air cylinder 23 moves downward due to the gravity of the moving plate 24, the moving plate 24 slides downward, so that the upper positioning device 30 and the clamping block 25 move toward the exhaust seat 50 located below, the upper positioning device 30 first positions the upper portion of the exhaust seat 50, then the clamping block 25 presses against the platform 512 located at the upper portion of the exhaust seat 50, and the exhaust seat 50 is clamped on the lower positioning device 10.

As can be seen from the above, when clamping, the air cylinder 23 is in the air-off state, and the air discharging seat 50 is clamped on the lower positioning device 10 only by the gravity of the moving plate 24, which is obviously unreliable, and in order to ensure the clamping effect of the air discharging seat 50, a locking device 40 for keeping the moving plate 24 and the fixed plate 22 from moving relatively is arranged between the moving plate 24 and the fixed plate 22.

As shown in fig. 9 and 10, the locking device 40 includes a guide sleeve 41 disposed on the fixing plate 22, and the guide sleeve 41 is fixed relative to the fixing plate 22 (for example, by a screw connection) to prevent the guide sleeve 41 from moving. A guide hole 411 is provided in the guide sleeve 41 so as to penetrate in the longitudinal direction, a push rod 42 is slidably provided in the guide hole 411, a screw 43 provided in the longitudinal direction is connected to the upper portion of the push rod 42, and the screw 43 and the push rod 42 move up and down in synchronization with each other. An external thread is arranged on the side surface of the screw 43 in the circumferential direction, the screw 43 is connected inside the nut 44 at the top of the guide sleeve 41 through the external thread, the nut 44 and the guide sleeve 41 are relatively fixed, the nut 44 is prevented from moving, a threaded hole 441 with an internal thread is arranged inside the nut 44, the screw 43 is arranged in the threaded hole 441 in a matching way, when the screw 43 rotates, the screw can move up and down in the nut 44, and therefore the mandril 42 below the screw 43 can move up and down along with the screw 43. When the jack 42 moves downward, the lower portion of the jack 42 will be forced downward, causing the clamp block 25 to have a tendency to move downward and will abut the clamp block 25 against the exhaust seat 50, thereby enabling the position of the clamp block 25 to be fixed.

It is obvious that the up and down movement and relative locking of the carrier rod 42 by the screw 43 and the nut 44 are only a good embodiment, and other locking assemblies with similar locking function can be used.

As shown in fig. 10, a better connection structure between the top rod 42 and the screw 43 is disclosed: a connecting port 421 is provided on the top of the push rod 42, and the connecting port 421 is an inverted T-shaped connecting groove. A constriction 431 which constricts radially inward is provided at the lower portion of the screw 43, so that the screw 43 is also substantially inverted T-shaped at a position below the constriction 431 when viewed from the side of the screw 43. When the screw 43 is installed, the screw 43 is installed in the connection port 421 through the contraction section 431, so that the rod 42 and the screw 43 can move up and down synchronously. The advantage of this connection is that when the screw 43 rotates, it only moves the top rod 42 up and down, but not rotates the top rod 42.

In order to ensure a certain travel of the moving plate 24 and to provide sufficient space for the lower positioning device 10 to mount the exhaust seat 50, the bottom of the push rod 42 should not be directly connected to the moving plate 24 or the clamping block 25, because this would make the push rod 42 move upward a large distance to provide sufficient distance for the moving plate 24 to move, which would be troublesome.

To solve this problem, as shown in fig. 10, a pad block 45 is detachably provided at the bottom of the carrier rod 42, and the pad block 45 needs to have a certain length, for example, 100mm to 500 mm. When clamping is required, a spacer block 45 is mounted to the bottom of the ram 42, and pressure is transmitted to the ram 42 through the spacer block 45. When released, the spacer 45 is removed from the bottom of the plunger 42, as shown in FIG. 9, leaving a distance between the moving plate 24 and the plunger 42 for the moving plate 24 to move upward.

The shape of the spacer 45 may be a rectangular parallelepiped, a cylinder, or other shapes that can be easily grasped, and the spacer 45 needs to have a certain rigidity to withstand the clamping force. In order to ensure that the push rod 42 can be accurately pressed on the top of the cushion block 45, the top of the cushion block 45 is provided with a positioning groove 451 which is recessed downwards, the bottom of the push rod 42 is provided with a positioning end 422 matched with the positioning groove 451, and the positioning end 422 can extend into the positioning groove 451 to position the cushion block 45, so that the cushion block 45 can be conveniently installed. Preferably, the positioning grooves 451 are formed at both upper and lower ends of the cushion block 45, so that the cushion block 45 does not need to distinguish between the upper end connected to the rod 42 and the lower end connected to the rod 42.

When the locking device 40 is used to lock the moving plate 24, the clamping block 25 can move in the vertical direction relative to the moving plate 24 in order to avoid crushing the air discharging seat 50 during the downward movement of the clamping block 25. For example, in fig. 10 and 11, a mounting hole 241 is provided on the moving plate 24 to penetrate longitudinally, the clamp block 25 is mounted in the mounting hole 241, and a blocking surface for blocking the clamp block 25 from falling out from below the mounting hole 241 is formed in the mounting hole 241. In this way, during the downward movement of the moving plate 24, the bottom of the clamping block 25 is firstly contacted with the exhaust seat 50, but because the clamping block 25 and the moving plate 24 can move relatively, the bottom of the clamping block 25 is only contacted with the top surface of the exhaust seat 50, and no great pressure can be applied to the exhaust seat until the moving plate 24 moves to the limit position (in the limit position, the moving plate 24 is not directly contacted with the exhaust seat 50, and a distance is still left between the two). At this time, the pad block 45 is mounted on the top of the clamping block 25, and the ram 42 is driven by the screw 43 to move downward, so that the pad block 45 presses the clamping block 25 downward, and the clamping block 25 applies a downward force on the exhaust seat 50, thereby clamping the exhaust seat 50 in the lower positioning device 10. It should be noted that the position of the pad 45 must correspond to the position of the clamping block 25 to apply force to the clamping block 25.

The clamping piece 25 may be shaped as a solid of revolution, for example, a stepped shaft having an upper portion with a larger diameter than a lower portion in fig. 11, and the stop surface in the above case may be a stepped surface provided in the mounting hole 241 (see fig. 11). Of course, the clamping block 25 may be of a tapered shape with a smaller bottom and a larger top, and the corresponding blocking surface may be a tapered inclined surface with a smaller bottom and a larger top.

The fixture ensures that the exhaust seat 50 completes the processing of four reference surfaces under one coordinate, and ensures the processing precision of high-precision accessories.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and is provided in the accompanying drawings. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The utility model provides a enlarge tight frock of clamp of installation space compressor exhaust seat installation of being convenient for, its characterized in that includes: a lower positioning device (10) and a clamping device (20) arranged above the lower positioning device (10); the clamping device (20) comprises: a fixing plate (22) which keeps the position of the lower positioning device (10) relatively constant; a moving plate (24) located between the fixed plate (22) and the lower positioning device (10); and a clamping block (25) which is arranged on the fixing plate (22) and protrudes downwards from the bottom surface of the fixing plate (22); a guide rod (21) extending longitudinally is arranged on the fixed plate (22), and the moving plate (24) is arranged on the guide rod (21) in a sliding manner; a driving part (23) for driving the moving plate (24) to move in the vertical direction is connected to the moving plate (24), and the driving part (23) adjusts the distance between the moving plate (24) and the lower positioning device (10); a locking device (40) used for locking the position between the fixed plate (22) and the moving plate (24) relatively when the fixed plate (22) and the moving plate (24) are clamped is arranged between the fixed plate (22) and the moving plate (24); when clamping is carried out, the locking device (40) locks the position of the clamping block (25), so that the clamping block (25) applies force downwards to act on the exhaust seat (50), and the exhaust seat (50) is clamped on the lower positioning device (10).

2. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat as claimed in claim 1, wherein the locking device (40) comprises: a guide sleeve (41) which is arranged on the fixing plate (22) and is internally provided with a guide hole (411) which penetrates through in the longitudinal direction; a push rod (42) which is positioned in the guide hole (411) and moves along the axial direction of the guide hole (411); and a locking assembly which is arranged on the guide sleeve (41) and locks the position of the mandril (42) and the guide hole (411) relatively when clamping; the position of the push rod (42) corresponds to the moving plate (24), and when clamping is performed, the bottom of the push rod (42) is in contact with the moving plate (24) or the clamping block (25), so that the position of the clamping block (25) is fixed.

3. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat as claimed in claim 2, wherein the moving plate (24) is provided with an installation hole (241) for installing the clamping block (25), and the clamping block (25) is movably arranged in the installation hole (241) along the axial direction of the installation hole (241); the position of the ejector rod (42) corresponds to the position of the clamping block (25).

4. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat according to claim 3, wherein a blocking surface is arranged inside the installation hole (241), and the blocking surface is matched with the clamping block (25) to prevent the clamping block (25) from falling out from the lower part of the installation hole (241).

5. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat as claimed in claim 3, wherein a cushion block (45) is detachably arranged between the bottom of the ejector rod (42) and the top of the clamping block (25), when clamping is performed, the cushion block (45) is installed between the ejector rod (42) and the clamping block (25), and the force of the ejector rod (42) is transmitted to the clamping block (25) through the cushion block (45); when loading and unloading are carried out, the cushion block (45) is taken out from between the push rod (42) and the clamping block (25), and a space for upward movement is reserved for the moving plate (24).

6. The clamping tool for expanding the installation space and facilitating the installation of the compressor discharge seat as claimed in claim 5, wherein a positioning end (422) is provided at the bottom of the ejector rod (42), a positioning groove (451) recessed downward is provided at the top of the cushion block (45), and when the ejector rod (42) is engaged with the cushion block (45), the positioning end (422) is located in the positioning groove (451).

7. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat according to claim 2, wherein the locking assembly comprises a nut (44) arranged on the guide sleeve (41) and a screw rod (43) arranged on the nut (44), the screw rod (43) is longitudinally arranged, the lower end of the screw rod (43) is connected with the upper end of the ejector rod (42), and the screw rod (43) rotates in the nut (44) to drive the ejector rod (42) to move up and down.

8. The clamping tool for expanding the installation space and facilitating the installation of the compressor exhaust seat as claimed in claim 2, wherein a connection port (421) is provided at the upper end of the ejector rod (42), and the connection port (421) is an inverted T-shaped connection groove; the lower end of the screw rod (43) is provided with a radially contracted contraction section (431), and the contraction section (431) is matched in the connecting port (421), so that the screw rod (43) cannot drive the ejector rod (42) to rotate when rotating.

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