Fixture combining positioning and clamping functions

Abstract

The utility model belongs to the technical field of work fixtures, and particularly relates to a fixture combining positioning and clamping functions, which comprises a positioning shell, a clamping device is mounted in the positioning shell, the clamping device comprises a clamping unit and a positioning unit, the clamping unit is mounted at the bottom of the positioning shell, and the positioning unit is mounted at the bottom of the positioning shell. The positioning unit is installed in the positioning shell. According to the clamp with the positioning and clamping functions combined, through the clamping units, a rotating groove and a movable block are clamped and further connected through a center shaft, so that a right clamping plate and a left clamping plate can be movably connected, the left clamping plate and the right clamping plate can rotate around the center shaft, and when a workpiece is clamped, the workpiece can be clamped through the rotating groove and the movable block; the workpiece extrudes the placing plate, and the center parts of the left clamping plate and the right clamping plate are further driven by the telescopic piece to start to turn downwards, so that the clamping block is further in contact with the workpiece, and the workpiece is clamped and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a fixture combining positioning and clamping functions. Background Art

[0002] The fixture belongs to the main tooling, and the tooling includes the fixture, which is a subordinate relationship. It is not only used for welding, but also useful in machining. Many times, it is needed when several parts need to be assembled and their positioning is accurate. The design of tooling fixtures should be closely linked to the product, because the tooling fixtures are specifically designed for certain products, and it is necessary to ensure that there is no interference during production, accurate positioning, and convenient operation for operators. Simply put, it is a tool used to clamp workpieces.

[0003] A fixture is a process device used to quickly fasten the workpiece during processing to keep the machine tool, tool and workpiece in accurate relative position. That is to say, workholding fixtures are indispensable parts of mechanical processing. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmentally friendly, fixture technology is developing towards high precision, high efficiency, modular, combined, universal and economical directions.

[0004] In the patent document with publication number CN203003729U, a clamp combining positioning and clamping functions is disclosed. The device drives a driving rod to move directly through a cylinder, and the driving rod drives the connecting rod to rotate, and the connecting rod drives the rocker to swing, so that the lower pressure head and the upper pressure head of the rocker are clamped to achieve the clamping function, and the positioning function is realized by the positioning pin set on the driving rod. It has both positioning and clamping functions, has a simple structure, occupies less space, and has more stable positioning.

[0005] However, the device's ability to clamp workpieces of different sizes needs to be improved, and the effect of rapid positioning also needs to be improved.

[0006] Therefore, we propose a fixture that combines positioning and clamping functions to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a clamp that combines positioning and clamping functions to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamp combining positioning and clamping functions, comprising a positioning shell, a clamping device is installed inside the positioning shell, the clamping device comprises a clamping unit and a positioning unit, the clamping unit is installed at the bottom of the positioning shell, and the positioning unit is installed inside the positioning shell;

[0009] The clamping unit includes a clamping shell, a left clamping plate, a right clamping plate, a rotating fixed shaft, a telescopic member, a central shaft, a placement plate, a clamping block, a rotating groove, and a movable block. The clamping shell is installed at the bottom of the positioning shell, the left clamping plate is installed inside the clamping shell, the right clamping plate is installed inside the clamping shell, the rotating fixed shaft is installed inside the left clamping plate, the telescopic member is installed at the bottom of the clamping shell, the central shaft is installed inside the left clamping plate, the placement plate is installed at the bottom of the central shaft, the clamping block is installed on the outer surface of the left clamping plate, the rotating groove is opened inside the left clamping plate, and the movable block is installed at the bottom of the clamping shell. The movable block is installed on the outer surface of the right clamping plate, and the clamping unit is installed to fix the left clamping plate and the right clamping plate through the central axis, so that the rotating groove is further engaged with the movable block, and further connected through the central axis, so that the right clamping plate and the left clamping plate can be movably connected, so that the left clamping plate and the right clamping plate can rotate around the central axis, so that when the workpiece is clamped, the workpiece is squeezed on the placement plate, and the center parts of the left clamping plate and the right clamping plate are further driven by the telescopic member to start to flip downward, so that the clamping block is further in contact with the workpiece, so that the workpiece is clamped and fixed.

[0010] Preferably, a protective layer is installed on the outer side of the clamping block, and anti-slip grooves are provided on the outer side of the protective layer. Thus, by installing the protective layer, damage to the workpiece caused by clamping and fixing the workpiece can be reduced. By providing the anti-slip grooves, the friction between the workpiece and the workpiece can be increased, thereby making the device clamp more firmly.

[0011] Preferably, the width of the interior of the clamping shell is greater than the length of the center axis, so that by placing the workpiece on the top of the placement plate, the placement plate begins to move downward due to gravity, causing the center axis to move downward, so that the center axis can be located inside the clamping shell, so that workpieces of different sizes can be clamped, thereby improving the practicability of the device.

[0012] Preferably, a rotating fixed shaft is installed inside the right clamping plate, so that when the placing plate starts to move downward, the left clamping plate and the right clamping plate will rotate along with the rotating fixed shaft, so that the clamping claws above the left clamping plate and the right clamping plate will start to retract inward, thereby clamping and fixing the workpiece.

[0013] Preferably, the positioning unit includes a transmission member, a screw rod, a sliding rod, a movable groove, and a movable block. The transmission member is installed on the left side of the positioning shell, the screw rod is installed on the right side of the transmission member, the movable groove is opened inside the positioning shell, the sliding rod is installed inside the movable groove, and the movable block is installed on the outer surface of the screw rod. By installing the positioning unit, the transmission member is started, thereby driving the screw rod to rotate through the transmission member, so that the screw rod rotates, thereby driving the movable block to move, thereby achieving a positioning effect.

[0014] Preferably, the bottom of the moving block is fixedly connected to the clamping shell, so that the whole clamping unit is driven to move by the movement of the moving block, thereby facilitating clamping, positioning and fixing.

[0015] Preferably, a threaded hole is provided inside the moving block, and the threaded hole and the screw rod are adapted to each other, so that the screw rod rotates to engage with the threaded hole inside the moving block, thereby driving the moving block to move through the threaded hole.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The fixture combining positioning and clamping functions installs a clamping unit, thereby fixing the left clamping plate and the right clamping plate through the central axis, further enabling the rotating groove to engage with the movable block, thereby further connecting through the central axis, so that the right clamping plate and the left clamping plate can be movably connected, so that the left clamping plate and the right clamping plate can rotate around the central axis, so that when the workpiece is clamped, the workpiece is pressed against the placement plate, and the center parts of the left clamping plate and the right clamping plate are further driven by the telescopic member to begin to flip downward, thereby further enabling the clamping block to contact the workpiece, thereby clamping and fixing the workpiece.

[0018] 2. The fixture combining positioning and clamping functions installs a positioning unit, thereby starting a transmission member, thereby driving the screw rod to rotate through the transmission member, thereby causing the screw rod to rotate, thereby driving the moving block to move, thereby achieving a positioning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the overall structure diagram of the utility model;

[0020] Figure 2 This is a structural diagram of the clamping unit of the utility model;

[0021] Figure 3 This is the internal structure diagram of the clamping unit of the utility model;

[0022] Figure 4 This is a diagram of the connection structure of the left clamping plate and the right clamping plate of the utility model.

[0023] In the figure: 101, positioning shell; 201, clamping shell; 202, left clamping plate; 203, right clamping plate; 204, rotating fixed axis; 205, telescopic member; 206, central axis; 207, placement plate; 208, clamping block; 209, rotating groove; 210, movable block; 301, transmission member; 302, screw rod; 303, sliding rod; 304, moving groove; 305, moving block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A clamp with a combination of positioning and clamping functions, comprising a positioning housing 101, a clamping device is installed inside the positioning housing 101, the clamping device comprises a clamping unit, and the clamping unit is installed at the bottom of the positioning housing 101;

[0028] The clamping unit includes a clamping shell 201, a left clamping plate 202, a right clamping plate 203, a rotating fixed shaft 204, a telescopic member 205, a central shaft 206, a placement plate 207, a clamping block 208, a rotating groove 209, and a movable block 210. The clamping shell 201 is installed at the bottom of the positioning shell 101, the left clamping plate 202 is installed inside the clamping shell 201, the right clamping plate 203 is installed inside the clamping shell 201, the rotating fixed shaft 204 is installed inside the left clamping plate 202, the telescopic member 205 is installed at the bottom of the clamping shell 201, the central shaft 206 is installed inside the left clamping plate 202, the placement plate 207 is installed at the bottom of the central shaft 206, the clamping block 208 is installed on the outer surface of the left clamping plate 202, and the rotating groove 209 is opened on the left clamping plate 202. Internally, the movable block 210 is installed on the outer surface of the right clamping plate 203, and the clamping unit is installed to fix the left clamping plate 202 and the right clamping plate 203 through the central axis 206, so that the rotating groove 209 is further engaged with the movable block 210, so that they are further connected through the central axis 206, so that the right clamping plate 203 and the left clamping plate 202 can be movably connected, so that the left clamping plate 202 and the right clamping plate 203 can rotate around the central axis 206, so that when the workpiece is clamped, the workpiece is squeezed by the placement plate 207, and the center of the left clamping plate 202 and the right clamping plate 203 is further driven by the telescopic member 205 to start to flip downward, so that the clamping block 208 is further in contact with the workpiece, thereby clamping and fixing the workpiece.

[0029] A protective layer is installed on the outside of the clamping block 208, and anti-slip grooves are provided on the outside of the protective layer. By installing the protective layer, the damage to the workpiece caused by clamping and fixing the workpiece can be reduced. By providing the anti-slip grooves, the friction between the workpiece and the workpiece can be increased, thereby making the device clamp more firmly.

[0030] The width inside the clamping shell 201 is greater than the length of the center axis 206. By placing the workpiece on top of the placement plate 207, the placement plate 207 begins to move downward due to gravity, causing the center axis 206 to move downward. This allows the center axis 206 to be located inside the clamping shell 201, so that workpieces of different sizes can be clamped, thereby improving the practicability of the device.

[0031] A rotating fixed shaft 204 is installed inside the right clamping plate 203, so when the placement plate 207 starts to move downward, the left clamping plate 202 and the right clamping plate 203 will rotate along with the rotating fixed shaft 204, so that the clamping claws above the left clamping plate 202 and the right clamping plate 203 begin to retract inward, thereby clamping and fixing the workpiece.

[0032] Embodiment 2:

[0033] On the basis of the first embodiment, the clamping device further includes a positioning unit, and the positioning unit is installed inside the positioning housing 101;

[0034] The positioning unit includes a transmission member 301, a screw rod 302, a slide bar 303, a movable groove 304, and a movable block 305. The transmission member 301 is installed on the left side of the positioning housing 101, the screw rod 302 is installed on the right side of the transmission member 301, the movable groove 304 is opened inside the positioning housing 101, the slide bar 303 is installed inside the movable groove 304, and the movable block 305 is installed on the outer surface of the screw rod 302. By installing the positioning unit, the transmission member 301 is started, and the screw rod 302 is driven to rotate through the transmission member 301, so that the screw rod 302 rotates, thereby driving the movable block 305 to move, thereby achieving a positioning effect.

[0035] The bottom of the moving block 305 is fixedly connected to the clamping shell 201 , so that the whole clamping unit is driven to move by the movement of the moving block 305 , thereby facilitating clamping, positioning and fixing.

[0036] A threaded hole is provided inside the moving block 305 , and the threaded hole and the screw rod 302 are adapted to each other, so that the screw rod 302 rotates to engage with the threaded hole inside the moving block 305 , thereby driving the moving block 305 to move through the threaded hole.

[0037] Working principle: When clamping the workpiece, the workpiece is squeezed against the placement plate 207, and the telescopic member 205 is further used to drive the center parts of the left clamping plate 202 and the right clamping plate 203 to begin to flip downward, so that the clamping block 208 is further brought into contact with the workpiece, thereby clamping and fixing the workpiece, and the transmission member 301 is started to rotate the output shaft of the transmission member 301, and the output shaft of the transmission member 301 is rotated, so that the transmission member 301 drives the screw rod 302 to rotate, and the screw rod 302 is rotated, so that the screw rod 302 is engaged with the threaded hole inside the moving block 305, and the screw rod 302 drives the moving block 305 to move inside the moving groove 304 by engaging with the threaded hole inside the moving block 305, so that the clamping unit is moved and positioned.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A clamp combining positioning and clamping functions, comprising a positioning housing (101), characterized in that: A clamping device is installed inside the positioning shell (101), the clamping device comprises a clamping unit and a positioning unit, the clamping unit is installed at the bottom of the positioning shell (101), and the positioning unit is installed inside the positioning shell (101); The clamping unit comprises a clamping shell (201), a left clamping plate (202), a right clamping plate (203), a rotating fixed shaft (204), a telescopic member (205), a central shaft (206), a placement plate (207), a clamping block (208), a rotating groove (209), and a movable block (210); the clamping shell (201) is installed at the bottom of the positioning shell (101); the left clamping plate (202) is installed inside the clamping shell (201); and the right clamping plate (203) is installed inside the clamping shell (201). The rotating fixed shaft (204) is installed inside the left clamping plate (202), the telescopic member (205) is installed at the bottom of the clamping shell (201), the central shaft (206) is installed inside the left clamping plate (202), the placement plate (207) is installed at the bottom of the central shaft (206), the clamping block (208) is installed on the outer surface of the left clamping plate (202), the rotating groove (209) is opened inside the left clamping plate (202), and the movable block (210) is installed on the outer surface of the right clamping plate (203).

2. A clamp combining positioning and clamping functions according to claim 1, characterized in that: A protective layer is installed on the outer side of the clamping block (208), and anti-slip grooves are provided on the outer side of the protective layer.

3. A clamp combining positioning and clamping functions according to claim 1, characterized in that: The width of the interior of the clamping shell (201) is greater than the length of the central axis (206).

4. The clamp with combined positioning and clamping functions according to claim 1, characterized in that: A rotating fixed shaft (204) is installed inside the right clamping plate (203).

5. The clamp with combined positioning and clamping functions according to claim 1, characterized in that: The positioning unit comprises a transmission member (301), a screw rod (302), a sliding rod (303), a movable groove (304), and a movable block (305); the transmission member (301) is installed on the left side of the positioning housing (101); the screw rod (302) is installed on the right side of the transmission member (301); the movable groove (304) is opened inside the positioning housing (101); the sliding rod (303) is installed inside the movable groove (304); and the movable block (305) is installed on the outer surface of the screw rod (302).

6. A clamp with combined positioning and clamping functions according to claim 5, characterized in that: The bottom of the moving block (305) is fixedly connected to the clamping shell (201).

7. The clamp with combined positioning and clamping functions according to claim 5, characterized in that: A threaded hole is provided inside the moving block (305), and the threaded hole and the screw rod (302) are adapted to each other.

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