Precise clamp with buffer structure

Abstract

The utility model relates to the technical field of clamps, and discloses a precise clamp with a buffer structure, which comprises a base, a mounting seat is fixed on the surface of the base, and a clamping component for conveniently clamping a workpiece and a protection component for preventing the workpiece from deforming due to the fact that clamping is not stopped in time are arranged on the surface of the base. According to the precise clamp with the buffer structure, when a protection assembly is arranged, a linkage clamping block and a movable clamping block abut against the surface of a workpiece, a rocker continues to be rotated, the linkage clamping block continuously moves, a first rack moves, and a gear rotates to drive a second rack, a sliding plate, a fixing cylinder and a fixing ring to move close to a linkage block; the linkage block is limited by the fixing ring, the rotating rod and the screw cannot continue to rotate, deformation and damage of a workpiece caused by too large clamping force due to the fact that the rotating rod is required to be rocked when rotation is not stopped in time can be avoided, and when the screw rotates reversely, normal rotation of the rotating rod and the screw cannot be affected through the ratchet wheel and the pawl, and the workpiece can be loosened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clamp, specifically to a precision clamp with buffer structure. BACKGROUND

[0002] Clamp is the device that is used to fix the processing object, make it occupy the correct position, accept the construction or detection device in the process of mechanical manufacturing, from the broad sense, in the process of any process, the device that is used to quickly, conveniently, safely install workpiece can be called clamp.

[0003] According to a kind of precision clamp with buffer structure (public number: CN211805719U) disclosed, in the above application, by being provided with spring and elastic plate, fixed table and elastic plate are connected by spring, when clamping force is too large, elastic plate extrudes spring, so that spring absorbs part of clamping force, prevent workpiece damage, when clamping force is small, spring extrudes elastic plate, compensates clamping force, prevent workpiece loosening.

[0004] But in the above application, part of clamping force is absorbed by spring alone to prevent workpiece damage, which is limited, when the elastic plate in the above application and slide are clamped to workpiece, if personnel do not stop rotating crank in time, clamping force will continue to increase, and workpiece will still be damaged. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of precision clamp with buffer structure to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of precision clamp with buffer structure, including base, the surface of the base is fixed with mounting seat, the surface of the base is provided with the clamping assembly for facilitating the clamping of workpiece and the protection assembly for preventing workpiece deformation from not stopping clamping in time, the clamping assembly includes: recess, sliding rod, screw rod, moving clamp block, fixed clamp block, sliding slot, linkage clamp block, spring one, rocker, the protection assembly includes:

[0007] Rack one, the rack one is fixed on the surface of linkage clamp block, the rack one is fixed in fixed clamp block away from linkage clamp block one end, and rack one and fixed clamp block slidingly connected, the surface of the fixed clamp block is fixed with fixed plate, the rack one slidingly connected on the surface of fixed plate.

[0008] Preferably, the protection assembly further comprises a gear rotatably connected to the surface of the fixed plate, the surface of the fixed plate is slidably connected with a rack two, the rack two and the rack one are engaged with the gear, the surface of the fixed plate is slidably connected with a sliding plate, the surface of the sliding plate is fixedly connected with the surface of the rack two, the surface of the sliding plate is fixedly connected with a fixed cylinder, the inner side of the fixed cylinder is slidably connected with a fixed ring, the surface of the fixed ring is fixedly connected with a spring two, one end of the spring two away from the fixed ring is fixed on the inner wall of the fixed cylinder, the surface of the base is provided with a rotating rod, the rotating rod penetrates through the base, and the surface of the rotating rod is fixedly connected with the screw rod, the surface of the base is rotatably connected with a connecting block, the rotating rod penetrates through the connecting block, the side of the connecting block close to the fixed clamping block is provided with a containing groove, the surface of the sliding plate is provided with a through hole, the connecting block continuously moves, the rack one moves, drives the gear to rotate, drives the rack two, the sliding plate, the fixed cylinder and the fixed ring to move close to the connecting block, when the connecting block enters the fixed ring, the fixed ring limits the connecting block, the rotating rod and the screw rod cannot continue to rotate, when the screw rod reverses, through the ratchet and pawl, the rotating rod and the screw rod cannot affect the normal reverse rotation, so that the workpiece can be loosened, through the containing groove and the through hole, the normal movement of the rack one and the rack two will not be affected.

[0009] Preferably, the recess is arranged on the top of the base, the recess is provided with two groups, and the two groups of recesses are symmetrically arranged on the surface of the base, the inner wall of one group of the recesses is rotatably connected with a screw rod, the inner wall of the other group of the recesses is fixedly connected with a sliding rod, the screw rod and the sliding rod are both penetrated by a moving clamping block, the moving clamping block is threadedly connected with the screw rod, and the moving clamping block is slidably connected with the sliding rod, the surface of the base is rotatably connected with a rocker, the output shaft of the rocker penetrates through the base, and the output shaft of the rocker is fixedly connected with the surface of the screw rod, the top of the base is fixedly connected with a fixed clamping block, the surface of the fixed clamping block is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a connecting clamping block, the rocker is positively rotated, the screw rod is rotated, and the moving clamping block moves close to the fixed clamping block, so that the workpiece is conveniently clamped, and the rocker is reversely rotated, so that the workpiece can be loosened.

[0010] Preferably, the surface of the rotating rod is provided with a pawl, and the inner side of the connecting block is provided with a ratchet, so that the rotating rod drives the connecting block to rotate when the screw rod is positively rotated, and the connecting block cannot rotate when the screw rod is reversely rotated.

[0011] Preferably, the inner sides of the connecting block and the fixed ring are both hexagonal, so that the connecting block can completely enter the fixed ring.

[0012] Preferably, the surface of the connecting clamping block is fixedly connected with a spring one, one end of the spring one away from the connecting clamping block is fixed on the inner wall of the sliding groove, the spring one and the connecting clamping block constitute a buffer assembly, and the clamping force can be automatically adjusted within a certain range.

[0013] Compared with the prior art, the precise clamp with the buffering structure has the following beneficial effects:

[0014] 1、The precise clamp with the buffering structure, through the setting of the protection assembly, when the connecting clamping block and the moving clamping block are in contact with the surface of the workpiece, the connecting clamping block continues to move by continuing to rotate the rocker, the rack moves, the gear rotates to drive the rack two, the sliding plate, the fixed cylinder and the fixed ring to move close to the connecting block, when the connecting block enters the fixed ring, the fixed ring limits the connecting block, the rotating rod and the screw cannot continue to rotate, so that the rocker cannot rotate without timely stopping, the clamping force is too large, the workpiece is deformed and damaged, when the screw reverses, the ratchet and pawl do not affect the normal reversal of the rotating rod and the screw, so that the workpiece can be loosened.

[0015] 2、The precise clamp with the buffering structure, through the setting of the clamping assembly, the rocker is rotated in the forward direction, the screw rotates, the moving clamping block moves close to the fixed clamping block, the workpiece is clamped conveniently, the rocker is reversed, the workpiece is loosened, the buffering assembly is formed by the spring one and the connecting clamping block, and the clamping force can be automatically adjusted within a certain range. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view structural schematic diagram of the utility model;

[0018] Figure 3 It is a sectional view structural schematic diagram of the utility model;

[0019] Figure 4 It is a protection assembly partial structural schematic diagram of the utility model.

[0020] In the drawing: 1, base; 2, mounting seat; 3, clamping assembly; 30, recess; 31, sliding rod; 32, screw; 33, moving clamping block; 34, fixed clamping block; 35, sliding groove; 36, connecting clamping block; 37, spring one; 38, rocker; 4, protection assembly; 40, rack one; 41, fixed plate; 42, gear; 43, sliding plate; 44, through hole; 45, rack two; 46, fixed cylinder; 47, rotating rod; 48, connecting block; 49, fixed ring; 400, spring two; 401, containing groove. DETAILED DESCRIPTION

[0021] As Figures 1-4The utility model provides a technical scheme: a precise clamp with buffer structure, including base 1, the surface of base 1 is fixed with mounting seat 2, the surface of base 1 is provided with the clamping assembly 3 of the convenience to workpiece clamping and the protection assembly 4 of preventing the workpiece deformation of not timely stop clamping, clamping assembly 3 includes: groove 30, sliding rod 31, screw 32, moving clamp block 33, fixed clamp block 34, sliding slot 35, linkage clamp block 36, spring one 37, rocker 38, protection assembly 4 includes: rack one 40, rack one 40 is fixed on the surface of linkage clamp block 36, the one end of rack one 40 away from linkage clamp block 36 penetrates fixed clamp block 34, and rack one 40 is connected with fixed clamp block 34 slidingly, the surface of fixed clamp block 34 is fixed with fixed plate 41, rack one 40 is connected on the surface of fixed plate 41 slidingly, protection assembly 4 still includes gear 42, gear 42 is rotatably connected on the surface of fixed plate 41, the surface of fixed plate 41 is slidably connected with rack two 45, rack two 45, rack one 40 all are engaged with gear 42, the surface of fixed plate 41 is slidably connected with sliding plate 43, the surface of sliding plate 43 is fixedly connected with the surface of rack two 45, the surface of sliding plate 43 is fixed with fixed cylinder 46, the inside of fixed cylinder 46 is slidably connected with fixed ring 49, the surface of fixed ring 49 is fixed with spring two 400, the one end of spring two 400 away from fixed ring 49 is fixed on the inner wall of fixed cylinder 46, the surface of base 1 is provided with swivel lever 47, swivel lever 47 penetrates base 1, and the surface of swivel lever 47 is fixedly connected with screw 32, the surface of base 1 is rotatably connected with linkage block 48, swivel lever 47 penetrates linkage block 48, the side of linkage clamp block 36 close to fixed clamp block 34 is provided with accommodating groove 401, the surface of sliding plate 43 is provided with through-hole 44, the surface of swivel lever 47 is provided with pawl, the inside of linkage block 48 is provided with ratchet wheel, the inside of linkage block 48 and fixed ring 49 are all provided as hexagonal, linkage clamp block 36 moves continuously, rack one 40 moves, so that gear 42 rotates and drives rack two 45, sliding plate 43, fixed cylinder 46, fixed ring 49 move close to linkage block 48, when the surface of linkage block 48 and the surface of fixed ring 49 resist, fixed ring 49 moves into fixed cylinder 46, spring two 400 is compressed, when the position of linkage block 48 and the shape of the inside of fixed ring 49 are parallel, spring two 400 releases, linkage block 48 enters fixed ring 49, the surface of linkage block 48 and the inside of fixed ring 49 resist, fixed ring 49 limits linkage block 48, swivel lever 47, screw 32 cannot continue to rotate, thereby can prevent the force of not timely stop rotating rocker 38 of personnel to be too big, causes workpiece deformation, damage.

[0022] The recess 30 is arranged on the top of the base 1, the recess 30 is provided with two groups, and the two groups of recesses 30 are symmetrically arranged on the surface of the base 1, the inner wall of one group of recesses 30 is rotationally connected with a screw rod 32, the inner wall of one group of recesses 30 is fixedly connected with a sliding rod 31, the screw rod 32 and the sliding rod 31 are penetrated by a moving clamp block 33, the moving clamp block 33 is threadedly connected with the screw rod 32, the moving clamp block 33 is slidably connected with the sliding rod 31, the surface of the base 1 is rotationally connected with a rocker 38, the output shaft of the rocker 38 penetrates the base 1, and the output shaft of the rocker 38 is fixed on the surface of the screw rod 32, the top of the base 1 is fixedly connected with a fixed clamp block 34, the surface of the fixed clamp block 34 is provided with a sliding groove 35, the sliding groove 35 is slidably connected with a linkage clamp block 36, the surface of the linkage clamp block 36 is fixedly connected with a spring 37, one end of the spring 37 away from the linkage clamp block 36 is fixed on the inner wall of the sliding groove 35, the rocker 38 is rotated in the forward direction, the screw rod 32 is rotated, the moving clamp block 33 moves close to the fixed clamp block 34, the workpiece is clamped conveniently, the spring 37 and the linkage clamp block 36 constitute a buffer assembly, and the clamping force can be automatically adjusted within a certain range.

[0023] When the workpiece needs to be clamped, the workpiece is placed on the surface of the base 1, the rocker 38 is turned in the forward direction, the screw rod 32 is rotated, the moving clamp block 33 is driven to move close to the fixed clamp block 34, the sliding rod 31 is arranged to stabilize the movement of the moving clamp block 33, when the surface of the connecting clamp block 36 and the surface of the moving clamp block 33 are in close contact with the surface of the workpiece, the rocker 38 is continuously turned, at this time, the connecting clamp block 36 enters the sliding groove 35, and the spring 37 is compressed, the spring 37 and the connecting clamp block 36 constitute a buffer assembly, which can automatically adjust the clamping force within a certain range, when the person continues to turn the rocker 38, the connecting clamp block 36 continuously moves, synchronously drives the rack 40 to move, the gear 42 is rotated to drive the rack 45 to move close to the base 1, at this time, the sliding plate 43 drives the fixed cylinder 46 and the fixed ring 49 to move close to the connecting block 48, at the same time, when the screw rod 32 rotates, the rotating rod 47 synchronously rotates, the ratchet and pawl is arranged to synchronously rotate the connecting block 48, when the surface of the connecting block 48 and the surface of the fixed ring 49 abut, at this time, the fixed ring 49 moves into the fixed cylinder 46, the spring 400 is compressed, when the position of the connecting block 48 is parallel to the shape of the inner side of the fixed ring 49, at this time, the spring 400 is released, the fixed ring 49 is reset, at this time, the connecting block 48 enters the fixed ring 49, the surface of the connecting block 48 abuts against the inner side of the fixed ring 49, at this time, the fixed ring 49 limits the connecting block 48, thereby the rotating rod 47 and the screw rod 32 cannot continue to rotate, so that the clamping force is prevented from being too large when the person does not timely stop turning the rocker 38, workpiece deformation and damage are caused, when the workpiece needs to be loosened, the rocker 38 is reversed, the ratchet and pawl is arranged to not affect the normal reverse rotation of the rotating rod 47, at this time, the screw rod 32 can normally reverse, drives the moving clamp block 33 to separate from the workpiece, at the same time, the spring 37 is released, drives the connecting clamp block 36 to reset, at this time, the rack 40 drives the gear 42 to reverse, the rack 45, the sliding plate 43, the fixed cylinder 46 and the fixed ring 49 are reset, the fixed ring 49 is separated from the connecting block 48, and the workpiece can be normally loosened.

[0024] The above is a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A precision clamp with a buffer structure, comprising a base (1), characterized in that: The base (1) has a mounting seat (2) fixed on its surface. The base (1) has a clamping assembly (3) for facilitating workpiece clamping and a protective assembly (4) to prevent workpiece deformation due to failure to stop clamping in time. The clamping assembly (3) includes: a groove (30), a slide rod (31), a screw (32), a moving clamping block (33), a fixed clamping block (34), a slide groove (35), a linkage clamping block (36), a spring (37), and a rocker arm (38). The protective assembly (4) includes: a rack (40), which is fixed on the surface of the linkage clamping block (36). One end of the rack (40) away from the linkage clamping block (36) passes through the fixed clamping block (34), and the rack (40) is slidably connected to the fixed clamping block (34). The fixed clamping block (34) has a fixing plate (41) fixed on its surface, and the rack (40) is slidably connected to the surface of the fixing plate (41).

2. The precision clamp with a buffer structure according to claim 1, characterized in that: The protective component (4) also includes a gear (42), which is rotatably connected to the surface of the fixed plate (41). A rack two (45) is slidably connected to the surface of the fixed plate (41). Both the rack two (45) and the rack one (40) mesh with the gear (42). A sliding plate (43) is slidably connected to the surface of the fixed plate (41). The surface of the sliding plate (43) is fixedly connected to the surface of the rack two (45). A fixed cylinder (46) is fixed to the surface of the sliding plate (43). A fixed ring (49) is slidably connected to the inner side of the fixed cylinder (46). The surface of the fixed ring (49) is... A second spring (400) is fixed to the surface. The end of the second spring (400) away from the fixed ring (49) is fixed to the inner wall of the fixed cylinder (46). A rotating rod (47) is provided on the surface of the base (1). The rotating rod (47) passes through the base (1) and is fixedly connected to the surface of the screw (32). A connecting block (48) is rotatably connected to the surface of the base (1). The rotating rod (47) passes through the connecting block (48). A receiving groove (401) is opened on the side of the connecting clamp (36) near the fixed clamp (34). A through hole (44) is opened on the surface of the sliding plate (43).

3. A precision clamp with a buffer structure according to claim 1, characterized in that: The groove (30) is formed on the top of the base (1). There are two sets of grooves (30), and the two sets of grooves (30) are symmetrically arranged on the surface of the base (1). The inner wall of one set of grooves (30) is rotatably connected to a screw (32), and the inner wall of the other set of grooves (30) is fixed with a slide rod (31). The screw (32) and the slide rod (31) are both connected through a movable clamping block (33). The movable clamping block (33) is threadedly connected to the screw (32), and the movable clamping block (33) is slidably connected to the slide rod (31). The surface of the base (1) is rotatably connected to a rocker arm (38). The output shaft of the rocker arm (38) passes through the base (1), and the output shaft of the rocker arm (38) is fixed on the surface of the screw (32). The top of the base (1) is fixed with a fixed clamping block (34). The surface of the fixed clamping block (34) is provided with a sliding groove (35), and the inner wall of the sliding groove (35) is slidably connected to a connecting clamping block (36).

4. A precision clamp with a buffer structure according to claim 2, characterized in that: The surface of the rotating rod (47) is provided with a pawl, and the inner side of the connecting block (48) is provided with a ratchet.

5. A precision clamp with a buffer structure according to claim 2, characterized in that: The inner sides of both the linkage block (48) and the fixing ring (49) are hexagonal.

6. A precision clamp with a buffer structure according to claim 1, characterized in that: A spring (37) is fixed to the surface of the linkage clamp (36), and the end of the spring (37) away from the linkage clamp (36) is fixed to the inner wall of the slide groove (35).

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