Clamping tool for machining precision parts

Abstract

The invention belongs to the technical field of machining and clamping of machine tool parts, and particularly relates to a clamping tool for machining precision parts, which comprises a fixing mechanism for fixing a clamping mechanism and a driving mechanism, the clamping mechanism comprises chucks, connecting rods, gear discs and U-shaped frames, the U-shaped frames are annularly arranged along the ends of the fixing mechanism, each U-shaped frame is connected with the corresponding gear disc, and the gear discs are connected with the connecting rods with the chucks at the ends; the gear disc rotates along the U-shaped frame, the chuck is driven by the connecting rod to perform angle rotation, and a part is clamped; the driving mechanism comprises a driving sleeve and a driving rod, a plurality of airtight grooves with one ends open are formed in the driving sleeve, one end of the driving rod is slidably connected to piston heads in the airtight grooves, and the other end of the driving rod is meshed with the gear disc; the piston head is driven to move in the airtight groove by inflating and deflating air into the airtight groove, so that a part is clamped by the chuck. According to the clamping tool, efficient clamping of parts in different shapes can be achieved, the labor intensity can be effectively reduced while the clamping effect is good, and the clamping protection effect on the parts is good.

Description

Technical Field

[0001] The invention relates to the technical field of machining and clamping of machine tool parts, and in particular to a clamping tool for machining precision parts. Background Art

[0002] Precision machining refers to machining with a machining accuracy of 10 to 0.1 microns and a surface roughness of less than 0.1 microns; commonly used machining methods include diamond turning, diamond boring, honing, grinding, belt grinding and mirror grinding; precision machining plays a very important role in the manufacturing industry and is often used in the machining of key parts such as precision screws, precision gears, precision worm gears, precision guide rails and precision bearings; Before machining precision parts, workers need to clamp the parts to facilitate stability during subsequent machining. For example, the existing public document CN218312179U-A tooling fixture for precision machining and the existing public document CN112091841A-A clamping fixture for machining precision parts both disclose a clamping device for machining precision parts. However, the existing clamping device has the following deficiencies when used for precision machining of parts: 1. In actual use, the existing clamping device is used to clamp the parts in a semicircular arc shape (or plate shape) as a whole, and the parts are clamped in a wrapping manner through the semicircular arc shape, which makes the clamping device unable to meet the effective clamping requirements of special-shaped parts.

[0003] 2. When the existing clamping device clamps the parts before processing, the staff needs to control the driving equipment (motor, cylinder, etc.) to drive the clamping plate to move to clamp the parts from both sides. However, it is difficult to take into account both stability and quality in this clamping method. Especially for some small sheet metals, the inappropriate clamping force can easily cause deformation or even damage of the parts; it also indirectly increases the labor intensity of the staff.

[0004] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the defects in the prior art that the clamping tooling can hardly meet the requirements of effective clamping of special-shaped parts and the clamping stability is poor during precision machining of parts, the purpose of the present invention is to provide a clamping tooling for machining precision parts, which connects the gear plate through a U-shaped frame of the clamping mechanism arranged along the fixing mechanism, and drives the gear plate of the clamping mechanism to rotate through the driving mechanism, thereby driving the connecting rod with the chuck to move synchronously, so as to achieve clamping of parts.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a clamping tool for machining precision parts, comprising: A fixing mechanism, used for fixing the driving mechanism; The clamping mechanism includes a clamp, a connecting rod, a gear plate and a U-shaped frame. The U-shaped frame is arranged in a circumferential direction along the end of the fixing mechanism. Each U-shaped frame is connected to a gear plate, and the gear plate is connected to a connecting rod with a clamp at the end. The gear plate rotates along the U-shaped frame, and the clamp is driven to rotate at an angle through the connecting rod to clamp the parts. The driving mechanism includes a driving sleeve and a driving rod. The driving sleeve is provided with a plurality of airtight grooves with one end being open. One end of the driving rod is slidably connected to a piston head in the airtight groove, and the other end is meshed with a gear plate. By filling and discharging air into the airtight groove, the piston head is driven to move in the airtight groove, so that the driving rod drives the gear plate to rotate, thereby driving the connecting rod with a chuck to move synchronously.

[0008] As a preferred solution of the present invention, a bar tooth is provided on the extension section of the driving rod, the bar tooth is arranged along the circumferential surface of the fixing mechanism, and the bar tooth is meshed with the gear plate.

[0009] As a preferred solution of the present invention, a fixing sleeve is fixed at the center of the gear plate, the fixing sleeve is slidably sleeved on the rotating column of the U-shaped frame, and the connecting rod is connected to the side walls of the fixing sleeve at both ends of the gear plate.

[0010] As a preferred solution of the present invention, a sealing disk is fixedly provided at the open end of the airtight groove, a first connecting pipe communicating with the airtight groove is fixedly provided on one end surface of the sealing disk, and a solenoid valve is fixedly provided on the first connecting pipe.

[0011] As a preferred solution of the present invention, an air pressure sensor is embedded and fixed on the side wall of the airtight groove close to one end of the sealing disk.

[0012] As a preferred solution of the present invention, the chuck is a right-angled trapezoidal block, and a rectangular block is fixedly provided on the vertical right-angled surface of the chuck, a convex groove penetrating the rectangular block is provided on the rectangular block, a T-shaped column is slidably sleeved in the convex groove, and a spring is slidably sleeved on the T-shaped column; the T-shaped column is fixedly connected to the end of the connecting rod.

[0013] As a preferred solution of the present invention, an anti-skid sleeve is sleeved on the outer side of the chuck, and anti-skid edges are arranged in an array on the horizontal right-angled bottom surface and the inclined surface of the outer side of the anti-skid sleeve.

[0014] As a preferred solution of the present invention, it also includes an adjustment mechanism, which includes an adjustment cylinder, an adjustment column and a hose; The adjusting cylinder is coaxially arranged at one end of the driving sleeve, and the adjusting cylinder is provided with placement grooves in the same number as the airtight grooves along a circumferential array, and the adjusting column is slidably sleeved in the placement grooves, and an air delivery cavity is also provided on the inner side of the middle part of the adjusting cylinder, and the air delivery cavity and the placement grooves are communicated through the through holes provided, and an air delivery pipe communicating with the air delivery cavity is fixedly provided on one end surface of the adjusting cylinder; The adjusting column is sealed and connected in the placement groove; the first connecting pipe communicating with the adjusting column and the airtight groove is connected through a hose.

[0015] As a preferred solution of the present invention, an air outlet cavity is opened in the adjusting column along the axial direction, and an air inlet hole is opened on the side wall of the adjusting column, and the air inlet hole is connected with the through hole; a second connecting pipe connected with the air outlet cavity is also fixedly provided at one end of the adjusting column, and the first connecting pipe and the second connecting pipe, which are in one-to-one correspondence, are connected by a hose.

[0016] As a preferred solution of the present invention, a partition plate is fixedly arranged inside the gas delivery cavity to divide the gas delivery cavity into two chambers of equal volume; There are two air inlet holes on the adjusting column, and the two air inlet holes are staggered and opened at 180 degrees to each other. Two through holes corresponding to the air inlet holes are connected to the two chambers respectively.

[0017] The present invention adopts the above technical solution, which has the following beneficial effects: One beneficial effect of the present invention is that when the clamping tool is in use, the staff first places the clamping part of the component between multiple chucks, and fills and deflates the gas through the first connecting pipe to achieve changes in the amount of gas in the airtight groove. The change in the amount of gas in the airtight groove can enable the piston head to drive the driving rod to move telescopically through the telescopic rod, and then through the coordinated arrangement of the gear teeth and the gear plate, under the action of the extension and retraction of the driving rod, the gear plate can drive the chuck to rotate with the rotating column as the axis, thereby adjusting the position of the chuck according to the size of the component and achieving effective clamping of the component.

[0018] In addition, by equipping each chuck with an airtight groove, the position of a single chuck can be positioned under the monitoring of the air pressure sensor, so that when facing special-shaped parts, they can be effectively clamped according to the shape of the parts. The setting of the air pressure sensor can monitor the changes in the air pressure in the airtight groove, so that the parts can be effectively clamped without causing damage to the parts, which is very practical.

[0019] Another beneficial effect of the present invention is that when the clamping tool is in use, by performing inflation and deflation operations at the position of the air pipe, the air chamber, the through hole, the air inlet hole, the air outlet chamber, the second connecting pipe and the hose are connected, so that when working at the position of the air pipe, the synchronous operation of multiple chucks can be controlled synchronously, and high work efficiency can be maintained and labor intensity can be reduced under the premise of ensuring effective clamping. Under the control of the solenoid valve, the chucks can be synchronized to achieve effective clamping of special-shaped parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall structure of a clamping tool for machining precision parts; Figure 2 For the present invention Figure 1 Left side view of the structure; Figure 3 For the present invention Figure 1 A vertical cross-sectional view of the structure in the direction of the axis of the drive sleeve; Figure 4 It is a schematic diagram of the coordination of the clamping mechanism and the fixing mechanism in the present invention; Figure 5 An exploded view of the clamping mechanism of the present invention; Figure 6 For the present invention Figure 5 Bottom schematic diagram of the structure; Figure 7 It is a schematic diagram of the cooperation between the driving mechanism and the adjusting mechanism in the present invention; Figure 8 For the present invention Figure 7 Exploded view of the structure; Fig. 9 This is a diagram of the piston head and the piston sleeve to be matched in the present invention; Fig.10 This is a diagram of the hose, the sealing disc and the adjusting column to be matched in the present invention; Fig.11 It is a schematic diagram of the overall structure of the regulating cylinder in the present invention; Fig.12 It is a cross-sectional view of the adjusting cylinder in the axial direction of the present invention; Fig.13 It is a cross-sectional view of the drive sleeve in the axial direction of the present invention.

[0021] In the figure: 100, clamping mechanism; 101, clamping head; 101a, anti-slip sleeve; 101a-1, anti-slip edge; 101b, convex groove; 101c, T-shaped column; 101c-1, spring; 101c-2, first connecting plate; 101c-3, rectangular groove; 101d, rectangular block; 102, connecting rod; 102a, second connecting plate; 103, gear plate; 103a, fixing sleeve; 104, U-shaped frame; 104a, rotating column; 200, driving mechanism; 201, driving sleeve; 201a, airtight groove; 201a-1, second internal thread; 201a-2, air pressure sensor; 201b, sealing disk; 201b-1, threaded sleeve; 201b-2, disassembly hole; 201b-3, first connecting pipe; 201b-4, solenoid valve; 201c, first internal thread; 202, driving rod; 202a, telescopic rod; 202a-1, piston head; 202b, piston sleeve; 202b-1, first oil seal groove; 202c, tooth bar; 300, fixing mechanism; 301, fixing ring; 302, L-shaped rod; 302a, connecting plate; 303, base plate; 303a, supporting rod; 303b, mounting hole; 400, adjustment mechanism; 401, adjustment cylinder; 401a, air delivery cavity; 401a-1, partition plate; 401a-2, through hole; 401b, placement groove; 401b-1, limit groove; 401c, first external thread; 401e, air delivery pipe; 402, adjusting column; 402a, air outlet cavity; 402a-1, air inlet hole; 402b, fixing plate; 402b-1, second connecting pipe; 402b-2, threaded through hole; 402c, limiting ring; 402c-1, second oil seal groove; 402d, positioning column; 402d-1, second external thread; 403. Hose. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0023] Example 1 Reference Figure 1 , which is the first embodiment of the present invention, provides a clamping tool for machining precision parts, including a clamping mechanism 100, a driving mechanism 200 arranged at one end of the clamping mechanism 100, a fixing mechanism 300 for fixing the clamping mechanism 100 on the driving mechanism 200, and an adjusting mechanism 400 located on the driving mechanism 200.

[0024] When the clamping tool is in use, the staff first places the clamping part of the component between the multiple clamps 101 of the clamping mechanism 100, and the clamps 101 can be moved to effectively clamp the component through the action of the driving mechanism 200.

[0025] like Figure 2 and Figure 3 As shown, specifically, the clamping mechanism 100 includes a plurality of U-shaped frames 104 circumferentially arranged along the end of the fixing mechanism 300 , each U-shaped frame 104 is connected to a gear plate 103 , the gear plate 103 is connected to a connecting rod 102 , and the end of the connecting rod 102 is connected to a chuck 101 .

[0026] like Figure 5 and Figure 6 As shown, a fixed sleeve 103a is fixed at the center position of the gear plate 103, and the fixed sleeve 103a is slidably sleeved on the rotating column 104a of the U-shaped frame 104. Both ends of the rotating column 104a are fixedly connected to the inner wall of the U-shaped frame 104, and the side walls of the fixed sleeves 103a at both ends of the gear plate 103 are fixedly connected to connecting rods 102.

[0027] like Figure 2 As shown, the driving mechanism 200 arranged at one end of the clamping mechanism 100 includes a driving sleeve 201 and a driving rod 202 arranged circumferentially along the driving sleeve 201 , the driving rod 202 is engaged with the gear plate 103 , the number of driving rods 202 and the number of chucks 101 are the same, and the multiple chucks 101 are evenly arranged along the circumference of the driving sleeve 201 .

[0028] like Figure 2 As shown, the fixing mechanism 300 includes a fixing ring 301 fixed to the driving sleeve 201 of the driving mechanism 200, an L-shaped rod 302 arranged circumferentially along the circumference of the fixing ring 301, and a base plate 303 for fixing the fixing ring 301. The L-shaped rod 302 is connected to the U-shaped frame 104, and the L-shaped rod 302, the U-shaped frame 104 and the chuck 101 are arranged in a one-to-one correspondence.

[0029] like Figure 2 , Figure 4 As shown, a connecting plate 302a is fixedly provided at one end of the L-shaped rod 302, and the connecting plate 302a is fixedly connected to the U-shaped frame 104 by bolts, thereby realizing detachable assembly therebetween, and the other ends of multiple L-shaped rods 302 are fixedly connected to the outer wall of the same fixing ring 301, and the fixing ring 301 is connected to the outer wall of the driving sleeve 201 by a bolt fixing sleeve 103a, thereby realizing the L-shaped rod 302 to keep the connecting rod 102 in position and fixed.

[0030] The base plate 303 at the lower end of the fixing ring 301 includes support rods 303a symmetrically connected to the side walls of the fixing ring 301, and the lower ends of the two support rods 303a are fixedly connected to the same base plate 303. The four corners of the base plate 303 are provided with mounting holes 303b. The setting of the mounting holes 303b facilitates the fixed installation of the entire device.

[0031] See Figure 3 , Figure 8 and Fig. 9 As shown, a plurality of airtight grooves 201a with one end being open are provided on the end surface of the driving sleeve 201 along a circumferential array, a telescopic rod 202a is fixedly provided at one end of the driving rod 202, and the other end of the telescopic rod 202a slides through the airtight groove 201a from the closed end of the airtight groove 201a to extend to the inside of the airtight groove 201a and is fixedly connected to the piston head 202a-1, a piston sleeve 202b is sleeved on the outer wall of the piston head 202a-1, and the piston sleeve 202b and the airtight groove 201a cooperate with each other, so that the airtight groove 201a away from the telescopic rod 202a side is in a relatively closed space, and then the change of the air volume in the space is realized to realize the change of the position of the piston sleeve 202b in the airtight groove 201a, and then the telescopic movement of the driving rod 202 in the axial direction of the airtight groove 201a is realized.

[0032] Furthermore, Fig. 9 As shown, a first oil seal groove 202b-1 is circumferentially provided on the outer wall of the piston sleeve 202b, and the first oil seal groove 202b-1 is filled with sealing oil, which can improve the sealing performance between the piston sleeve 202b and the airtight groove 201a.

[0033] like Fig. 9 As shown, a bar tooth 202 c is provided on the extension section of the driving rod 202 , the bar tooth 202 c is arranged along the circumferential surface of the fixing mechanism 300 , and the bar tooth 202 c is meshed with the gear plate 103 .

[0034] When the above arrangement is in use, through the meshing arrangement between the gear teeth 202c and the gear plate 103, when the driving rod 202 is telescopically moved, the gear plate 103 can be rotated around the rotating column 104a as the axis, and then the chuck 101 can be driven by the connecting rod 102 to rotate the angle, thereby clamping parts of different sizes.

[0035] In the actual clamping process, the multiple clamps 101 are gathered together to achieve clamping from the outside of the component, and when the multiple clamps 101 are spread apart from each other, clamping from the inside of the component can be achieved.

[0036] See Figure 3 , Figure 7 , Figure 8 , Fig.10 and Fig.13 As shown, a sealing disk 201b is fixedly disposed at the open end of the airtight groove 201a. Fig.10 As shown, a first connecting pipe 201b-3 connected to the airtight groove 201a is fixedly provided on one end surface of the sealing disk 201b, and a solenoid valve 201b-4 is fixedly provided on the first connecting pipe 201b-3. A threaded sleeve 201b-1 is fixedly provided on the other end surface of the sealing disk 201b provided with the first connecting pipe 201b-3. A second internal thread 201a-1 that is spirally matched with the threaded sleeve 201b-1 is provided on the inner wall of one end of the airtight groove 201a. This arrangement can realize a detachable connection between the sealing disk 201b and the driving sleeve 201, which is convenient for maintenance and replacement. The arrangement of the solenoid valve 201b-4 can realize the on and off of the first connecting pipe 201b-3. A disassembly hole 201b-2 is provided on the surface of the sealing disk 201b.

[0037] like Figure 8 As shown, an air pressure sensor 201a-2 is embedded and fixed on the side wall of the airtight groove 201a close to one end of the sealing disk 201b. The setting of the air pressure sensor 201a-2 can monitor the gas pressure in the airtight groove 201a.

[0038] When the above-mentioned arrangement is in use, air is filled and discharged into the airtight groove 201a through the first connecting tube 201b-3, which can drive the piston head 202a-1 to move in the airtight groove 201a, so that the chuck 101 can clamp the parts. After the clamping is completed, the air pressure in the airtight groove 201a will change as air is continued to be filled and discharged. When the air pressure reaches the predetermined value, the solenoid valve 201b-4 is closed to limit the position of the chuck 101.

[0039] Furthermore, the sealing disk 201b outside the threaded sleeve 201b-1 is symmetrically provided with disassembly holes 201b-2. The provision of the disassembly holes 201b-2 can facilitate the staff to realize the rotation of the sealing disk 201b by using tools.

[0040] Example 2 Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 , which is the second embodiment of the present invention, is based on the previous embodiment, except that this embodiment is proposed in order to ensure that the chuck 101 can maintain a good clamping effect for different parts.

[0041] Specifically, the chuck 101 is a right-angled trapezoidal block, and a rectangular block 101d is fixedly arranged on the vertical right-angled surface of the chuck 101, and a convex groove 101b penetrating the rectangular block 101d is opened in the horizontal direction on the chuck 101 at the position of the rectangular block 101d, a T-shaped column 101c is slidably sleeved in the convex groove 101b, and a spring 101c-1 is slidably sleeved on the T-shaped column 101c on the inner side of the convex groove 101b, and the setting of the spring 101c-1 can realize the automatic resetting of the T-shaped block 101c.

[0042] like Figure 5 As shown, one end of the T-shaped column 101c is fixedly connected to the first connecting plate 101c-2 along the outer side of the convex groove 101b, one end of the two connecting rods 102 is fixedly connected to the same second connecting plate 102a, and the first connecting plate 101c-2 and the second connecting plate 102a are fixed by bolts, thereby realizing a detachable connection between the T-shaped column 101c and the connecting rod 102.

[0043] like Figure 6 As shown, a rectangular groove 101c - 3 for clearance fit of the rectangular block 101d is provided on the end surface of the first connecting plate 101c - 2 outside the T-shaped column 101c, thereby achieving fit and limit between the T-shaped column 101c and the connecting rod 102.

[0044] When the above-mentioned arrangement is in use, by setting the chuck 101 as a right-angled trapezoidal block, the horizontal surface and the inclined surface of the chuck 101 can effectively fit and clamp parts of different shapes. When facing a specific shape, the staff can pull the chuck 101 to separate the rectangular block 101d and the rectangular groove 101c-3. After separation, the staff can rotate the chuck 101 to achieve effective switching between the horizontal surface and the inclined surface. After the switching is completed, the chuck 101 can be released to realize the re-matching and limiting of the rectangular block 101d and the rectangular groove 101c-3.

[0045] Furthermore, an anti-slip sleeve 101a is sleeved on the outer side of the chuck 101. The anti-slip sleeve 101a is preferably made of rubber and is bonded to the chuck 101 by an adhesive. Anti-slip edges 101a-1 are arranged in an array on the horizontal right-angled bottom surface and the inclined surface of the outer side of the anti-slip sleeve 101a. The anti-slip edges 101a-1 are used to improve the anti-slip effect.

[0046] Example 3 Reference Figure 3 , Figure 7 , Figure 8 , Fig.10 , Fig.11 , Fig.12 and Fig.13, which is the third embodiment of the present invention, is based on any of the above embodiments, except that this embodiment is proposed in order to improve the synchronization of the actions of multiple chucks 101, thereby reducing labor intensity while improving work efficiency.

[0047] Specifically, it also includes an adjustment mechanism 400, which includes an adjustment tube 401, an adjustment column 402 and a hose 403. The adjustment tube 401 is coaxially arranged at one end of the driving sleeve 201, and a circumferential array of placement grooves 401b equal to the number of the airtight grooves 201a is provided on the adjustment tube 401, and the adjustment column 402 is slidably sleeved in the placement grooves 401b; an air delivery cavity 401a is also provided on the inner side of the middle part of the adjustment tube 401, and the air delivery cavity 401a and the placement grooves 401b are connected through the through holes 401a-2 provided therebetween; an air delivery pipe 401e connected to the air delivery cavity 401a is fixedly provided on one end surface of the adjustment tube 401, so that each placement groove 401b can be connected to the air delivery cavity 401a through the through holes 401a-2.

[0048] like Fig.10 , Fig.11 , Fig.12 As shown, a limiting groove 401b-1 is circumferentially provided on the inner wall of the placement groove 401b near the open end, and a limiting ring 402c is circumferentially fixed on the outer wall of the adjusting column 402 to cooperate with the limiting groove 401b-1. This arrangement can achieve a limiting seal between the adjusting column 402 and the limiting groove 401b-1, and at the same time can keep the adjusting column 402 rotating relative to the limiting groove 401b-1; a second oil seal groove 402c-1 is circumferentially provided on the outer wall of the limiting ring 402c, and the second oil seal groove 402c-1 is filled with sealing oil to improve the sealing of the cooperation.

[0049] like Fig.10 As shown, an air outlet cavity 402a is opened in the adjusting column 402 along the axial direction, and an air inlet hole 402a-1 is opened on the side wall of the adjusting column 402. The axis of the through hole 401a-2 is located on the axial rotation trajectory surface of the air inlet hole 402a-1. One end of the adjusting column 402 is also fixed with a second connecting tube 402b-1 connected to the air outlet cavity 402a. The first connecting tube 201b-3 and the second connecting tube 402b-1 are connected one by one through a hose 403.

[0050] When the above arrangement is in use, the air can be pumped and released through the air pipe 401e by connecting it to the air pump. During the pumping and releasing process, the synchronous movement of the chuck 101 is achieved under the action of the air path formed by the air pipe 401e, the air cavity 401a, the through hole 401a-2, the placement groove 401b, the air inlet hole 402a-1, the air outlet cavity 402a, the second connecting pipe 402b-1, the hose 403 and the first connecting pipe 201b-3, which can reduce the complexity of clamping.

[0051] Further, such as Fig.11 As shown, a first external thread 401c is provided on the outer wall of the other end of the adjusting cylinder 401 provided with the air supply pipe 401e, and a first internal thread 201c spirally matched with the first external thread 401c is provided on the outer wall of the middle groove of the driving sleeve 201, thereby realizing a detachable connection between the driving sleeve 201 and the adjusting cylinder 401.

[0052] Example 4 Reference Figure 3 , Fig.10 , Fig.11 and Fig.12 , which is the fourth embodiment of the present invention, is based on the previous embodiment, but is different in that in order to better target parts of different shapes, the staff can better control the fit and clamping of the chuck 101 and the parts, thereby improving adaptability, so this embodiment is proposed.

[0053] Specifically, Fig.12 As shown, the partition plate 401a-1 fixed inside the gas delivery cavity 401a divides the gas delivery cavity 401a into two chambers of equal volume; Fig.10 As shown, there are two air inlet holes 402a-1 on the adjustment column 402, and the two air inlet holes 402a-1 are staggered and opened at 180 degrees to each other, and two through holes 401a-2 corresponding to the air inlet holes 402a-1 are connected to the two chambers respectively.

[0054] like Fig.11 As shown, there are two air pipes 401e, and the two air pipes 401e are connected to the two chambers respectively, one of the air pipes 401e is connected to the air inlet end of an air pump through a pipeline, and the other air pipe 401e is connected to the air outlet end of another air pump through a pipeline.

[0055] When the above-mentioned arrangement is in use, by rotating the adjusting column 402, any one of the two air inlet holes 402a-1 can be connected to the through hole 401a-2, and the through hole 401a-2 is connected to the two chambers respectively. In combination with the two air pipes 401e being connected to the two chambers respectively, the direction of the air flow in the air outlet cavity 402a can be independently operated under the operation of the air pump, which manifests as some of the chucks 101 being gathered and some of the chucks 101 being spread out, thereby facilitating effective clamping of parts of different shapes.

[0056] In addition, it should be noted that the clamping tool also includes a controller (not shown in the drawings) for controlling various electrical components, and the controller is arranged at a position convenient for the operator to operate.

[0057] Further, such as Fig.10 As shown, a fixing plate 402b is fixedly disposed on one end of the adjusting column 402 outside the placement groove 401b, and a threaded through hole 402b-2 is eccentrically formed on the fixing plate 402b, a positioning column 402d is slidably sleeved in the threaded through hole 402b-2, and a second external thread 402d-1 which is spirally matched with the threaded through hole 402b-2 is formed on the side wall of the positioning column 402d, thereby realizing the sliding and limiting of the positioning column 402d in the threaded through hole 402b-2; Fig.11 As shown, the end surfaces of the adjustment cylinder 401 on both sides of the placement groove 401b are symmetrically provided with positioning holes 401d for inserting one end of the positioning column 402d. By switching the positioning column 402d in the two positioning holes 401d, the adjustment column 402 can be rotated 180° and limited after rotation.

[0058] In addition, it should be noted that the components not described in detail in this article are prior art.

[0059] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present invention, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A clamping tool for machining precision parts, characterized in that: include: A fixing mechanism (300) used for fixing the driving mechanism (200); The clamping mechanism (100) comprises a clamp (101), a connecting rod (102), a gear plate (103) and a U-shaped frame (104); the U-shaped frame (104) is arranged in a circumferential direction along the end of the fixing mechanism (300); each U-shaped frame (104) is connected to a gear plate (103); the gear plate (103) is connected to a connecting rod (102) with a clamp (101) at the end; the gear plate (103) rotates along the U-shaped frame (104), and the clamp (101) is driven to rotate at an angle through the connecting rod (102) to clamp the component; The driving mechanism (200) comprises a driving sleeve (201) and a driving rod (202); a plurality of airtight grooves (201a) with one end being open are provided in the driving sleeve (201); one end of the driving rod (202) is slidably connected to a piston head (202a-1) in the airtight groove (201a), and the other end is meshed with a gear plate (103); by filling and discharging air into the airtight groove (201a), the piston head (202a-1) is driven to move in the airtight groove (201a), so that the driving rod (202) drives the gear plate (103) to rotate, thereby driving the connecting rod (102) with the clamp (101) to move synchronously.

2. A clamping tool for machining precision parts as claimed in claim 1, characterized in that: The extended section of the driving rod (202) is provided with a bar tooth (202c), the bar tooth (202c) is arranged along the circumferential surface of the fixing mechanism (300), and the bar tooth (202c) is meshed with the gear plate (103).

3. A clamping tool for machining precision parts as claimed in claim 1, characterized in that: A fixing sleeve (103a) is fixed at the center of the gear plate (103), the fixing sleeve (103a) is slidably sleeved on a rotating column (104a) of the U-shaped frame (104), and the connecting rod (102) is connected to the side walls of the fixing sleeve (103a) at both ends of the gear plate (103).

4. A clamping tool for machining precision parts as claimed in claim 1, characterized in that: A sealing disk (201b) is fixedly provided at the open end of the airtight groove (201a), a first connecting pipe (201b-3) in communication with the airtight groove (201a) is fixedly provided on one end surface of the sealing disk (201b), and a solenoid valve (201b-4) is fixedly provided on the first connecting pipe (201b-3).

5. A clamping tool for machining precision parts as claimed in claim 4, characterized in that: An air pressure sensor (201a-2) is embedded and fixedly provided on a side wall of the airtight groove (201a) close to one end of the sealing disk (201b).

6. A clamping tool for machining precision parts as claimed in claim 1, characterized in that: The chuck (101) is a right-angled trapezoidal block, and a rectangular block (101d) is fixedly arranged on a vertical right-angled surface of the chuck (101); a convex groove (101b) penetrating the rectangular block (101d) is provided on the rectangular block (101d); a T-shaped column (101c) is slidably sleeved in the convex groove (101b), and a spring (101c-1) is slidably sleeved on the T-shaped column (101c); the T-shaped column (101c) is fixedly connected to the end of the connecting rod (102).

7. A clamping tool for machining precision parts as claimed in claim 1, characterized in that: The outer side of the chuck (101) is sleeved with an anti-slip sleeve (101a), and the horizontal right-angled bottom surface and the inclined surface of the outer side of the anti-slip sleeve (101a) are both provided with anti-slip edges (101a-1) in an array.

8. A clamping tool for machining precision parts as claimed in claim 1 or 4, characterized in that: It also includes an adjustment mechanism (400), wherein the adjustment mechanism (400) includes an adjustment cylinder (401), an adjustment column (402) and a hose (403); The regulating cylinder (401) is coaxially arranged at one end of the driving sleeve (201); the regulating cylinder (401) is provided with placement grooves (401b) in a circumferential array in a number equal to the number of the airtight grooves (201a); the regulating column (402) is slidably sleeved in the placement grooves (401b); an air delivery cavity (401a) is also provided on the inner side of the middle portion of the regulating cylinder (401); the air delivery cavity (401a) and the placement grooves (401b) are communicated with each other via a through hole (401a-2); and an air delivery pipe (401e) in communication with the air delivery cavity (401a) is fixedly provided on one end surface of the regulating cylinder (401); The regulating column (402) is sealed and connected in the placement groove (401b); the regulating column (402) is connected to the first connecting pipe (201b-3) in communication with the airtight groove (201a) via a hose (403).

9. A clamping tool for machining precision parts as claimed in claim 8, characterized in that: An air outlet cavity (402a) is provided in the adjusting column (402) along the axial direction, an air inlet hole (402a-1) is provided on the side wall of the adjusting column (402), and the air inlet hole (402a-1) is connected to the through hole (401a-2); a second connecting pipe (402b-1) connected to the air outlet cavity (402a) is also fixedly provided at one end of the adjusting column (402), and the first connecting pipe (201b-3) and the second connecting pipe (402b-1) which are in one-to-one correspondence are connected via a hose (403).

10. A clamping tool for machining precision parts as claimed in claim 9, characterized in that: A partition plate (401a-1) is fixedly arranged inside the gas delivery cavity (401a) to divide the gas delivery cavity (401a) into two chambers of equal volume; There are two air inlet holes (402a-1) on the regulating column (402), and the two air inlet holes (402a-1) are staggered and opened at 180 degrees to each other, and two through holes (401a-2) corresponding to the air inlet holes (402a-1) are respectively connected to the two chambers.

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