CN111468968A - Rocking arm type auxiliary clamping device for numerical control machining - Google Patents

Abstract

The invention provides a rocker arm type auxiliary clamping device for numerical control machining, comprising a fixing structure; a sliding structure is slidably installed on the upper end surface of the fixing structure, and the whole of the adjusting structure is vertically slid and fixed on the sliding structure; The adjusting structure is connected with the root position of the rocker structure, and a clamping structure is sleeved and installed at the end of the rocker structure. The adjusting knob installed by the thread on the adjusting structure can adjust the position of the adjusting knob through the thread. distance, and the adjustment block installed at the end of the adjustment knob is in a rotatable state as a whole, so that the adjustment block will not rotate with the adjustment rotation of the adjustment knob, and the end of the adjustment block is slidingly installed inside the inclined chute. When the adjustment knob rotates and moves, it will drive the adjustment block to move backward, so that the adjustment block will lift the rocker arm rod as a whole along the track of the inclined chute, so as to achieve the purpose of adjusting and opening and closing the rocker arm rod.

Description

A rocker arm type auxiliary clamping device for CNC machining

technical field

The invention belongs to the technical field of numerical control machining, and more particularly, particularly relates to a rocker arm type auxiliary clamping device for numerical control machining.

Background technique

CNC machining refers to a process method for machining parts on CNC machine tools. The process rules of CNC machine tool processing and traditional machine tool processing are generally consistent, but there have also been significant changes. A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of variable variety of parts, small batches, complex shapes, and high precision, and to achieve high-efficiency and automated processing. There are many kinds of processing fixtures on general CNC machine tools, such as chuck-shaped, screw-fixed , rocker shape, etc.

Application number: CN201611224936.8, the present invention discloses a machined rocker arm type fixture device, comprising a casing, a lock, a self-locking mechanism with gears, a drive rod and a bevel gear, and the lower end of the drive rod is connected to There is a screw rod, the bevel gear includes a first bevel gear and a second bevel gear, the first bevel gear is provided with an internal thread that cooperates with the screw rod, and the second bevel gear and the first bevel gear cooperate with each other. A crank handle is inserted into the inner hole of the second bevel gear at a certain angle. The machining grading fixture device of the present invention has double self-locking functions, good locking performance, ingenious structural design, easy operation, and ensures the machining accuracy of the workpiece, improves the production quality of the workpiece, and ensures production safety.

Based on the above, the entire existing CNC rocker clamp can only clamp the workpiece in a single direction, and cannot stably tighten the workpiece in multiple positions. The tightness cannot be adjusted either.

Therefore, in view of this, the existing structure and defects are studied and improved, and a rocker-type auxiliary clamping device for CNC machining is provided, in order to achieve a more practical purpose.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a rocker arm type auxiliary clamping device for numerical control machining, so as to solve the problem that the existing rocker arm type fixture has a single function and cannot stabilize and tighten the workpiece in multiple positions. It is easy to shake and the clamping force of the workpiece cannot be adjusted.

The purpose and effect of the rocker arm type auxiliary clamping device used for numerical control machining of the present invention are achieved by the following specific technical means:

A rocker arm type auxiliary clamping device for numerical control machining, comprising a fixing structure; a sliding structure is slidably installed on the upper end surface of the fixing structure, and the whole of the adjusting structure is vertically slid and fixed on the sliding structure; The structure is connected with the root position of the rocker structure, and a clamping structure is sleeved and installed at the end of the rocker structure.

Further, the fixing structure includes a mounting plate, an installation groove, a clamping block, a clamping plate, and a clamping buckle. The overall upper end face of the installation plate of the fixing structure has a horizontal Anzu groove, and the whole of the clamping block is formed. In order to be fixedly installed in the installation groove of the installation plate, a clamping block with the same section as the installation groove is fixedly installed on the lower end face of the clamping block fixed in the installation groove, and a clamping buckle is installed on the outer position of the clamping block. , a clamping plate is installed on the whole upper end face of the clamping block.

Further, the clamping block and the clamping buckle can only fix the position, and a clamping plate is provided on the upper end face of the clamping block, and a clamping slot is provided at the position where the clamping plate and the clamping block contact each other. At the same time, there are threaded fixing holes in the same position on the clamping plate and the clamping block, and the position of the threaded hole is located at the root of the clamping plate, and the protruding part of the clamping plate is irregular in shape Match the contact position of the mounting riser.

Further, the sliding structure includes an installation vertical plate, a sliding shaft, a sliding block, and a guide chute. The installation vertical plate of the sliding structure is integrally fixed on the installation plate through a fixing structure, and the sliding shaft on the installation vertical plate is arranged on the right side. At the top of the side, and the guide chute is opened at the lower end of the sliding shaft, the sliding block is installed on the sliding shaft of the vertical plate, and a cylindrical shaft at the lower end of the sliding block is stuck inside the guide chute, and slides at the same time. The other end of the block is overlapped on the side plate of the installation riser.

Further, the adjustment structure includes an adjustment knob, an adjustment block, and an inclined chute. The adjustment knob of the adjustment structure is installed in a hole at the top of the sliding block overlapping position, and the adjustment knob and the sliding block are threaded. At the same time, the outer part of the adjustment knob is the knob handle, the adjustment block and the adjustment knob are connected to each other, and the adjustment knob and the adjustment block can be rotated at any 360 degrees. The end of the sled is a sliding column installed in the inclined chute, and the whole of the inclined chute is opened at the upper end of the root of the rocker arm in the vertical position.

Further, the rocker arm structure includes a guide block, a linkage plate, and a rocker arm rod. The two rocker arm rods of the rocker arm knot structure are mounted on the sliding block by hinged connection, and one rocker arm rod is connected to the other. The installation angle between the rocker rods is offset by 90 degrees, and a link plate is installed at the other end of the root of the rocker rod. The plates are engaged with each other through the inclined groove, and the position of the intermeshing position of the linkage plate is fixed by a guide block, and the whole guide plate is installed on the clamping block.

Further, the clamping structure includes a telescopic rod, a fastening plate, a fixing knob, and a spring. The whole of the clamping structure is installed at the end of the telescopic rod, and the whole of the telescopic rod is tightened through two fixing holes. The fastening plate is fixed at the end of the telescopic rod through three guide posts, and the bottom surface of the fastening plate is provided with protrusions, and the guide posts at the two ends of the fastening plate and the telescopic rod are in contact with each other. A spring is added, and a fixed knob is installed on the guide column in the middle.

Further, the guide column on the middle position of the fastening plate is integrally provided with threads, and the fixing knob is installed on the guide column with threads on the telescopic rod, and the fixing knob and the guide column are fixed by threaded engagement, Both ends of the threaded guide column are vertically cut off, and at the same time, the inner diameter of the fixed knob is cut off the cross-sectional shape of the guide column.

Compared with the prior art, the present invention has the following beneficial effects:

In the setting of the fixing structure, the clamping block of the fixing device is slidably installed in the installation groove of the installation plate, and the clamping block installed in the installation groove is in a state that can slide along the installation groove as a whole, and the end of the clamping block is in the state of sliding along the installation groove. The provided clamping buckle is used for fixing the position of the whole clamping block, and the quick clamping block enables the whole clamping block to adjust the position more quickly.

The setting of the sliding and adjusting structure, the sliding block on the installation vertical plate is under the action of the sliding shaft and the guide chute, so that the whole sliding block can perform a vertical sliding action on the installation vertical plate, and the other end of the sliding block It is installed on the side plate of the vertical plate by lap connection, so that the whole of the sliding block is more stable during the sliding process. The adjustment knob installed through the thread on the adjustment structure can adjust the position distance of the adjustment knob through the thread, and adjust the adjustment knob. The adjustment block installed at the end of the knob is in a rotatable state as a whole, so that the adjustment block will not rotate with the adjustment rotation of the adjustment knob. At the same time, the end of the adjustment block is slidably installed inside the inclined chute. When the adjusting block is moved backward, the adjusting block will lift the rocker arm rod as a whole along the trajectory of the inclined chute, so as to achieve the purpose of adjusting and opening and closing the rocker arm rod.

The setting of the rocker arm and the clamping structure, the main power of the rocker arm structure comes from the adjustment structure at the root of the vertical rocker arm rod at the upper end, and the rocker arm rod of the rocker arm structure is set in two places, and the position angles are different. In order to further achieve the synchronous motion effect of the two rocker levers, a linkage plate is installed at the ends of the two rocker levers, so that the two linkage plates are meshed with each other to form a mutual linkage state, and the two linkage plates are mutually linked. The linkage plate is guided by a guide block at the meshing part, which makes the linkage effect of the linkage plate more stable. The telescopic rod of the clamping structure can be fixed through two fixing holes set at the root, and the telescopic rod can be fixed at the bottom of the telescopic rod. The fastening plate installed at the end and the three knobs fixed at the end can make the fastening plate more stable, and the protruding surface provided on the bottom surface of the fastening plate makes the fastening plate more stable when pressing the workpiece.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the fixing structure of the present invention.

FIG. 3 is a schematic diagram of the structure of the installation vertical plate of the present invention.

FIG. 4 is a schematic view of the sliding structure of the present invention.

FIG. 5 is a schematic view of the rocker arm structure of the present invention.

FIG. 6 is a schematic diagram of the clamping structure of the present invention.

FIG. 7 is a schematic cross-sectional structure diagram of the sliding block of the present invention.

FIG. 8 is a schematic diagram of a partial enlarged structure of part A of the present invention.

FIG. 9 is a schematic diagram of a partially enlarged structure at B of the present invention.

In the figure, the corresponding relationship between component names and drawing numbers is:

1. Fixed structure; 101, Mounting plate; 102, Mounting groove; 103, Clamping block; 104, Clamping plate; 105, Clamping buckle; 2. Sliding structure; 201, Mounting vertical plate; 202, Sliding shaft; 203 , sliding block; 204, guide chute; 3, adjustment structure; 301, adjustment knob; 302, adjustment block; 303, inclined chute; 4, rocker arm structure; 401, guide block; 402, linkage plate; 403, rocker Arm rod; 5. Clamping structure; 501, Telescopic rod; 502, Fastening plate; 503, Fixing knob; 504, Spring;

Detailed ways

The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

In the description of the present invention, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by , "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example:

As shown in accompanying drawings 1 to 9:

The present invention provides a rocker type auxiliary clamping device for numerical control machining, comprising a fixing structure 1; a sliding structure 2 is slidably mounted on the upper end surface of the fixing structure 1, and the whole of the adjusting structure 3 is vertically slid and fixed on the sliding structure 2; the adjustment structure 3 is connected with the root position of the rocker structure 4, and the clamping structure 5 is sleeved and installed at the end of the rocker structure 4, and the guide column at the middle position of the fastening plate 502 is integrally provided with a thread , and the fixing knob 503 is installed on the threaded guide post on the telescopic rod 501, and the fixing knob 503 and the guide post are threadedly engaged and fixed, and the two ends of the threaded guide post are vertically cut off, and At the same time, the inner meridian of the fixing knob 503 has the cross-sectional shape of the guide column cut off, and the inner meridian of the cut part of the fixing knob 503 can be matched with the guide columns at both ends which are also cut off, so that the matching guide column and the fixing knob 503 can slide up and down arbitrarily, on the contrary If the fixing knob 503 is rotated, the uncut parts of the two can be engaged with each other through the thread, so as to achieve the purpose of adjusting and fixing the fixing rib.

The fixed structure 1 includes a mounting plate 101, a mounting groove 102, a clamping block 103, a clamping plate 104, and a clamping buckle 105. The overall upper end surface of the mounting plate 101 of the fixed structure 1 has a horizontal Anzu groove, and the clamping The whole of the block 103 is fixedly installed in the installation groove 102 of the installation plate 101 , and a clamping block with the same cross-section as the installation groove 102 is fixedly installed on the lower end surface of the clamping block 103 fixed in the installation groove 102 , and the clamping block 103 A clamping buckle 105 is installed on the outer position of the clamping block 103, and a clamping plate 104 is installed on the whole upper end surface of the clamping block 103. The clamping block 103 of the fixing device is slidably installed in the installation groove 102 of the installation plate 101, so The clamping block 103 installed in the installation groove 102 is in a state that can slide along the installation groove 102 as a whole, and the clamping buckle 105 provided at the end of the clamping block 103 is used to fix the overall position of the clamping block 103. The clamping block 103 enables the entire clamping block 103 to adjust the position more quickly.

Among them, the clamping block 103 and the clamping buckle 105 can only fix the position, and a clamping plate 104 is provided on the upper end face of the clamping block 103, and the clamping plate 104 and the clamping block 103 are set in a position where they are in contact with each other. There are card grooves for fixing, and at the same time, threaded fixing holes are opened at the same positions on the clamping plate 104 and the clamping block 103, and the position of the threaded holes is located at the root of the clamping plate 104, and the extension of the clamping plate 104. The irregular shape of the outgoing part matches the contact position of the installation vertical plate 201. The whole of the clamping plate 104 cooperates with the clamping block 103 to fix the installation vertical plate 201. The two places on the clamping plate 104 Threaded holes make the clamping plate 104 and the clamping block 103 more tightened, and the outer end of the clamping plate 104 and the installation vertical plate 201 collide with each other, so as to further fix the installation vertical plate 201 .

The sliding structure 2 includes an installation vertical plate 201 , a sliding shaft 202 , a sliding block 203 , and a guide chute 204 . The installation vertical plate 201 of the sliding structure 2 is integrally fixed on the installation plate 101 through the fixing structure 1 . The sliding shaft 202 is arranged at the top of the right side, and the guide chute 204 is opened at the lower end of the sliding shaft 202. The sliding block 203 is installed on the sliding shaft 202 of the installation vertical plate 201, and the sliding block 203 is located at the lower end of the sliding block 203. The cylindrical shaft is stuck inside the guide chute 204, and the other end of the sliding block 203 is overlapped on the side plate of the installation vertical plate 201. The sliding block 203 on the installation vertical plate 201 passes through the sliding shaft 202 and the guide chute 204. down, so that the whole of the sliding block 203 can perform a vertical sliding motion on the installation vertical plate 201, and the other end of the sliding block 203 is installed on the side plate of the installation vertical plate 201 by overlapping, so that the sliding block 203 The whole is more stable during the sliding process.

The adjustment structure 3 includes an adjustment knob 301 , an adjustment block 302 , and an oblique chute 303 . The adjustment knob 301 of the adjustment structure 3 is installed in the hole at the top of the overlapping position of the sliding block 203 , and the adjustment knob 301 is connected to the sliding block 203 . It is connected by threads, and at the same time, the outer part of the adjustment knob 301 is a knob handle, the adjustment block 302 and the adjustment knob 301 are connected by mutual clamping, and the adjustment knob 301 and the adjustment block 302 can be arbitrarily three hundred In the state of sixty-degree rotation, the end of the adjustment block 302 is a slide column installed in the inclined chute 303. The whole of the inclined chute 303 is opened at the upper end of the root of the rocker arm 403 in the vertical position, and the adjustment structure 3 passes through The adjustment knob 301 installed with thread can adjust the position distance of the adjustment knob 301 through the thread, and the adjustment block 302 installed at the end of the adjustment knob 301 can be rotated as a whole, so that the adjustment block 302 will not follow the adjustment of the adjustment knob 301. While rotating, the end of the adjusting block 302 is slidably installed inside the inclined chute 303. When the adjusting block 302 rotates and moves with the adjusting knob 301, it will drive the adjusting block 302 to move backwards, so that the adjusting block 302 will slide along the inclined direction. The track of the groove 303 lifts the rocker lever 403 as a whole, so as to adjust and open and close the rocker lever 403 .

The rocker arm structure 4 includes a guide block 401, a linkage plate 402, a rocker arm rod 403, and the two rocker arm rods 403 of the rocker arm knot structure are mounted on the sliding block 203 by means of hinges, and one rocker arm rod 403 is connected to the sliding block 203. The installation angle between the other rocker arm rods 403 is offset by 90 degrees. A link plate is installed at the other end of the root of the rocker arm rod 403 , and two link plates 402 are provided with inclined plates. The two linkage plates are engaged with each other through the chute, and the mutual engagement of the linkage plates 402 is fixed in position by a guide block 401. The whole guide plate is installed on the clamping block 103. The main power of the arm structure 4 comes from the adjustment structure 3 at the root of the vertical rocker arm rod 403 at the upper end, and the rocker arm rods 403 of the rocker arm structure 4 are arranged in two places, and the position angles are different. To achieve the synchronous motion effect of the two rocker levers 403, install the linkage plate 402 on the ends of the two rocker levers 403, and let the two linkage plates 402 mesh with each other to form a mutual linkage state, and the two linkage plates 402 are mutually linked. A guide block 401 guides the linkage plate 402 at the meshing portion, so that the linkage effect of the linkage plate 402 is more stable.

The clamping structure 5 includes a telescopic rod 501, a fastening plate 502, a fixing knob 503, and a spring 504. The whole of the clamping structure 5 is installed at the end of the telescopic rod 501, and the whole of the telescopic rod 501 passes through two fixing holes. After tightening the screws, it is fixed, and the fastening plate 502 is sleeved and fixed at the end of the telescopic rod 501 through three guide posts, and the bottom end surface of the fastening plate 502 is provided with protrusions. A spring 504 is added between the contact with the telescopic rod 501, and a fixing knob 503 is installed on the guide column in the middle. The telescopic rod 501 of the clamping structure 5 can be fixed through two fixing holes set at the root. Moreover, the fastening plate 502 installed at the end of the telescopic rod 501 and the three knobs fixed thereto can make the fastening plate 502 more stable, and the protruding surface provided on the bottom surface of the fastening plate 502 makes the fastening plate 502 more stable when pressing the workpiece. of stability.

The specific usage mode and function of this embodiment:

In the present invention, the clamping block 103 of the fixing device is slidably installed in the installation groove 102 of the installation plate 101, and the clamping block 103 installed in the installation groove 102 is in a state that can slide along the installation groove 102 as a whole, and the clamping block 103 The clamping buckle 105 set at the end of the clamping block 103 is used to fix the overall position of the clamping block 103. The quick clamping block 103 enables the whole clamping block 103 to adjust the position more quickly. Under the action of the sliding shaft 202 and the guide chute 204, the sliding block 203 enables the entire sliding block 203 to perform a vertical sliding motion on the installation vertical plate 201, and the other end of the sliding block 203 is installed on the mounting plate 201 by lap joint. The side plate of the vertical plate 201 is installed to make the whole of the sliding block 203 more stable during the sliding process. The adjustment knob 301 installed on the adjustment structure 3 through the thread can adjust the position distance of the adjustment knob 301 through the thread, and the adjustment knob The adjustment block 302 installed at the end of the 301 is in a state of being able to rotate as a whole, so that the adjustment block 302 will not rotate following the adjustment and rotation of the adjustment knob 301. When the 302 rotates and moves with the adjustment knob 301, it will drive the adjustment block 302 to move backward, so that the adjustment block 302 will lift the rocker arm rod 403 as a whole along the trajectory of the inclined chute 303 to adjust and open and close the rocker arm. The purpose of the rod 403 is that the main power of the rocker structure 4 comes from the adjustment structure 3 at the root of the vertical rocker rod 403 at the upper end, while the rocker rods 403 of the rocker structure 4 are arranged in two places with different position angles , in order to further achieve the synchronous motion effect of the two rocker levers 403, the linkage plate 402 is installed at the ends of the two rocker levers 403, so that the two linkage plates 402 are meshed with each other to form a mutual linkage state, and in the Where the two linkage plates 402 mesh with each other, a guide block 401 guides the linkage plate 402, so that the linkage effect of the linkage plate 402 is more stable, and the telescopic rod 501 of the clamping structure 5 can be fixed by two places at the root. The fastening plate 502 installed at the end of the telescopic rod 501 and its three fixed knobs can make the fastening plate 502 more stable, and the protruding surface set on the bottom surface of the fastening plate 502 makes the fastening plate 502 more stable. 502 is more stable when pressing the workpiece.

The embodiments of the present invention are presented for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use.

Claims (8)

1. The utility model provides a rocking arm formula auxiliary clamping device for numerical control processing which characterized in that: comprising a fixed structure (1); the upper end face of the fixed structure (1) is provided with a sliding structure (2) in a sliding manner, and the whole adjusting structure (3) is vertically fixed on the sliding structure (2) in a sliding manner; the adjusting structure (3) is connected with the root position of the rocker arm structure (4), and the clamping structure (5) is sleeved at the tail end of the rocker arm structure (4).

2. The swing arm type auxiliary clamping device for numerical control machining according to claim 1, wherein: fixed knot constructs (1) including mounting panel (101), mounting groove (102), chucking piece (103), chucking board (104), chucking knot (105), the whole up end of mounting panel (101) of fixed knot structure (1) begins to have horizontal ann ancestor groove, and the whole of chucking piece (103) be fixed mounting in mounting groove (102) of mounting panel (101), and terminal surface fixed mounting has a fixture block that locates the same with mounting groove (102) cross-section under chucking piece (103) of fixing in mounting groove (102), and then installs chucking knot (105) on the outside position of chucking piece (103), installs a department chucking board (104) on the whole up end of chucking piece (103).

3. The swing arm type auxiliary clamping device for numerical control machining according to claim 2, wherein: the clamping block (103) and the clamping buckle (105) can only fix the position, a position and a clamping plate (104) are arranged on the upper end face of the clamping block (103), the clamping plate (104) and the clamping block (103) are in mutual contact with each other, a clamping groove is arranged for fixation, thread fixing holes are formed in the same position of the clamping plate (104) and the clamping block (103) at the same time, the position of each thread hole is located at the root of the clamping plate (104), and the extending part of the clamping plate (104) is in an irregular shape and is matched with the contact position of an installation vertical plate (201).

4. The swing arm type auxiliary clamping device for numerical control machining according to claim 1, wherein: sliding construction (2) are including installation riser (201), sliding shaft (202), sliding block (203), direction spout (204), the whole fixed knot that passes through in installation riser (201) of installation riser (2) constructs (1) and fixes on mounting panel (101), sliding shaft (202) on installation riser (201) set up in right side top department, and direction spout (204) then set up the lower extreme position in sliding shaft (202), sliding block (203) are installed on sliding shaft (202) of installation riser (201), and a department's cylinder axle of sliding block (203) low-end position then blocks inside direction spout (204), the other end overlap joint of sliding block (203) is on the curb plate of installation riser (201) simultaneously.

5. The swing arm type auxiliary clamping device for numerical control machining according to claim 1, wherein: adjusting structure (3) include adjust knob (301), regulating block (302), spout (303) to one side, adjust knob (301) of structure (3) are for installing downthehole at sliding block (203) overlap joint position department top, and be through threaded connection between adjust knob (301) and sliding block (203), and adjust knob (301) get the outside part simultaneously and be the knob handle, be the connected mode of mutual joint between regulating block (302) and adjust knob (301), and be the pivoted state for can arbitrary three hundred sixty degrees between adjust knob (301) and regulating block (302), the terminal department of regulating block (302) is a sliding column of department installation in spout (303) to one side, the whole of spout (303) is for seting up in vertical position rocking arm pole (403) root upper end to one side.

6. The swing arm type auxiliary clamping device for numerical control machining according to claim 1, wherein: the rocker arm structure (4) comprises a guide block (401), a linkage plate (402) and rocker arms (403), wherein the two rocker arms (403) of the rocker arm structure are all installed on a sliding block (203) in a hinged mode, the installation angle between one rocker arm (403) and the other rocker arm (403) is in a state of being deviated by ninety degrees, the other end of the root of each rocker arm (403) is provided with a linkage plate, chutes are formed in the two linkage plates (402) in a social mode, the two linkage plates are meshed with each other through the chutes in a transmission mode, the meshed parts of the linkage plates (402) are fixed in position through one guide block (401), and the guide plates are installed on a clamping block (103) integrally.

7. The swing arm type auxiliary clamping device for numerical control machining according to claim 1, wherein: the clamping structure (5) comprises an expansion link (501), a fastening plate (502), a fixing knob (503) and a spring (504), the whole clamping structure (5) is installed at the tail end of the expansion link (501), the whole expansion link (501) is fixed after screws are screwed through two fixing holes, the fastening plate (502) is sleeved and fixed at the tail end of the expansion link (501) through three guide posts, a protrusion is arranged on the bottom end face of the fastening plate (502), the spring (504) is additionally arranged between the guide posts at the two end positions of the fastening plate (502) and the expansion link (501) in mutual contact, and the fixing knob (503) is installed on the guide post at the middle position.

8. The swing arm type auxiliary clamping device for numerical control machining according to claim 7, wherein: the guide post on the intermediate position of mounting plate (502) wholly is provided with the screw thread, and fixed knob (503) for install on telescopic link (501) threaded guide post, and fixed for thread engagement is fixed between fixed knob (503) and the guide post, threaded guide post both ends are the state of perpendicular excision, and the cross sectional shape of guide post has been excised to the interior warp of fixed knob (503) simultaneously.

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