Fine adjustment clamp limiting mechanism

Abstract

The present application relates to a kind of fine adjustment fixture limiting mechanism, including rotating drive block, rotating drive block is connected with cylinder, rotating drive block is equipped with shaft sleeve, shaft sleeve is equipped with mandrel in place, shaft sleeve is located at the two sides of rotating drive block respectively and is provided with front end cap assembly and rear end cap assembly, one end of mandrel is provided with adjusting screw rod, adjusting screw rod is connected with adjusting positioning assembly, and another end of mandrel is provided with workpiece limiting assembly. Therefore, for different workpieces, effective adjusting positioning can be realized, so that the stop block can better limit the workpiece and eliminate the influence of possible joint tolerance. Independent cylinder is provided, rapid response can be realized, the clamping speed of workpiece and the accurate positioning level are improved, the production efficiency and machining quality are greatly improved. Simple structure, convenient to adjust, can realize the application of multiple types of workpieces, and reduce production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to a limiting mechanism, in particular to a fine adjustment clamp limiting mechanism. BACKGROUND

[0002] In the process of machining workpieces, the workpieces need to be clamped and limited in a certain area for processing, so as to realize rapid clamping and improve machining efficiency.

[0003] However, in actual application, the size and length of the workpiece are different, and the requirements for the clamp are also different. The commonly used single clamp cannot realize positioning of multiple different types of workpieces. At the same time, the conventional clamp is mainly manually clamped, and the use efficiency is general.

[0004] In view of the above defects, the present application actively researches and innovates to create a fine adjustment clamp limiting mechanism, so as to have more industrial use value. SUMMARY

[0005] To solve the above technical problems, the purpose of the present application is to provide a fine adjustment clamp limiting mechanism.

[0006] The fine adjustment clamp limiting mechanism of the present application comprises a rotary driving block, wherein: a cylinder is connected to the rotary driving block, a shaft sleeve is sleeved in the rotary driving block, a core shaft is arranged in the shaft sleeve, front and rear end cover assemblies are arranged on both sides of the rotary driving block, an adjusting screw is arranged at one end of the core shaft, an adjusting positioning assembly is connected to the adjusting screw, and a workpiece limiting assembly is arranged at the other end of the core shaft.

[0007] Further, the fine adjustment clamp limiting mechanism comprises an extension fin arranged on the rotary driving block, the extension fin is connected to the cylinder, a positioning hole is arranged on the extension fin, a clamping groove pin is arranged in the positioning hole, the clamping groove pin is connected to the cylinder, elastic retaining rings are arranged on both sides of the clamping groove pin, and the elastic retaining rings are located outside the extension fin.

[0008] Further, the fine adjustment clamp limiting mechanism comprises an adjusting shaft connected to the adjusting screw, a fixed gear is arranged outside the adjusting shaft, a hand wheel is movably arranged on the fixed gear, a pre-tightening assembly is arranged between the adjusting shaft and the hand wheel, a positioning screw is arranged on one side of the hand wheel, and the positioning screw is in contact with the adjusting screw.

[0009] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the hand wheel has an internal gear with accurate graduation; the fixed gear and the adjusting shaft also have gears with the same specification; the hand wheel, the fixed gear and the adjusting shaft are kept in position of the adjusting screw under the action of the pre-tightening assembly through the meshing of the gears.

[0010] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the fixed gear is internally provided with a receiving space, the receiving space is provided with a copper gasket, the copper gasket is sleeved on the adjusting shaft, the copper gasket is in contact with the adjusting shaft and the fixed gear at the same time, and the tail end of the copper gasket is provided with a locking nut.

[0011] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the pre-tightening assembly is a spring.

[0012] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the core shaft is threadedly connected with the adjusting screw, the core shaft is provided with a T-shaped groove, and the rotary driving block can rotate around the fixed gear under the driving of the air cylinder, so as to drive the core shaft to rotate.

[0013] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the core shaft is provided with a sealing ring on the side close to the workpiece limiting assembly.

[0014] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the front end cover assembly comprises a first front end cover, and the first front end cover is provided with a second front end cover at the front end joint.

[0015] Further, the fine adjustment clamp limiting mechanism has the following further improvements: the workpiece limiting assembly comprises a cantilever connected with the core shaft, the cantilever is provided with a stop block for limiting the workpiece, the other end of the core shaft is provided with a column hole key, and the cantilever is connected into the column hole key for positioning through the locking screw after being combined with the core shaft.

[0016] Through the above scheme, the present application has at least the following advantages:

[0017] 1. Different workpieces can be effectively adjusted and positioned, so that the stop block can better limit the workpiece and eliminate the influence of the possible joint tolerance.

[0018] 2. The independent air cylinder can realize rapid response, improve the clamping speed and accurate positioning level of the workpiece, and greatly improve the production efficiency and machining quality.

[0019] 3. The structure is simple, the adjustment is convenient, various types of workpieces can be applied, and the production cost is reduced.

[0020] The above description is only a summary of the technical scheme of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, the preferred embodiments of the present application are described in detail as follows with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the fine adjustment clamp limiting mechanism.

[0022] Figure 2 is a schematic diagram of the plane structure of the fine adjustment clamp limiting mechanism.

[0023] Figure 3 is a schematic diagram of the internal structure of the fine adjustment clamp limiting mechanism.

[0024] Figure 4 is a schematic diagram of the internal structure of the fine adjustment clamp limiting mechanism. Figure 3

[0025] Figure 5 is a schematic diagram of the internal structure of the fine adjustment clamp limiting mechanism.

[0026] Figure 6 is a schematic diagram of the internal structure of the fine adjustment clamp limiting mechanism.

[0027] The meanings of the reference numerals in the drawings are as follows.

[0028] 1 positioning screw 2 shaft sleeve

[0029] 3 adjusting screw 4 adjusting shaft

[0030] 5 fixed gear 6 hand wheel

[0031] 7 spring 8 core shaft

[0032] 9 rotating drive block 10 sealing ring

[0033] 11 column hole key 12 copper gasket

[0034] 13 locking nut 14 clamping groove pin shaft

[0035] 15 elastic retainer 16 key structure

[0036] 17 locking screw 18 cantilever

[0037] 19 stop block 20 air cylinder

[0038] 21 first front end cover 22 second front end cover

[0039] 23 rear end cover assembly 24 workpiece

[0040] 25 internal gear DETAILED DESCRIPTION ​

[0041] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0042] As Figures 1 to 6 The fine-tuning clamp limiting mechanism comprises a rotating driving block 9, which is characterized in that a cylinder 20 is connected to the rotating driving block 9 to facilitate corresponding control driving. Meanwhile, a shaft sleeve 2 is sleeved in the rotating driving block 9, a mandrel 8 is penetrated in the shaft sleeve 2, and front end cover assemblies and rear end cover assemblies 23 are arranged on both sides of the rotating driving block 9 to achieve effective positioning. In addition, the front end cover assemblies comprise a first front end cover 21, and a second front end cover 22 is arranged at the front end joint of the first front end cover 21. In this way, effective multiple limiting can be achieved. During implementation, an adjusting screw 3 is arranged at one end of the mandrel 8, and an adjusting positioning assembly is connected to the adjusting screw 3. In addition, a workpiece limiting assembly is arranged at the other end of the mandrel 8.

[0043] In combination with a preferred embodiment of the present application, an extension fin is arranged on the rotating driving block 9, and the extension fin is connected to the cylinder 20. Specifically, a positioning hole is arranged on the extension fin, a clamping slot pin 14 is penetrated in the positioning hole, the clamping slot pin 14 is connected to the cylinder 20 at the same time, elastic retaining rings 15 are arranged on both sides of the clamping slot pin 14, and the elastic retaining rings 15 are located outside the extension fin.

[0044] Further, the adjusting positioning assembly comprises an adjusting shaft 4 connected to the adjusting screw 3. During assembly, the adjusting screw 3 is in interference fit with the adjusting shaft 4. Meanwhile, a fixed gear 5 is arranged outside the adjusting shaft 4, and a hand wheel 6 is movably arranged on the fixed gear 5. In order to have appropriate limiting, a pre-tightening assembly is arranged between the adjusting shaft 4 and the hand wheel 6, one side of the hand wheel 6 is provided with a positioning screw 1, and the positioning screw 1 is in contact with the adjusting screw 3. In order to meet the accurate fine-tuning, an accurately divided internal gear 25 is arranged inside the hand wheel 6, and the fixed gear 5 and the adjusting shaft 4 also have gears of the same specifications. In this way, the hand wheel 6, the fixed gear 5, and the adjusting shaft 4 are kept in position of the adjusting screw 3 through the meshing of the gears under the action of the pre-tightening assembly. Meanwhile, considering the need for active limiting of the adjusting shaft 4, a receiving space is arranged in the fixed gear 5, a copper gasket 12 is arranged in the receiving space, the copper gasket 12 is sleeved on the adjusting shaft 4, and the copper gasket 12 is in contact with the adjusting shaft 4 and the fixed gear 5 at the same time. In addition, a lock nut 13 is arranged at the tail end of the copper gasket 12 to achieve appropriate limiting. In order to facilitate the generation of appropriate bonding force, the pre-tightening assembly is a spring 7. In this way, the hand wheel 6 and the fixed gear 5 can be tightly attached under the action of the spring 7.

[0045] In combination with the actual implementation, in order to realize the stable combination, the mandrel 8 is threadedly connected with the adjusting screw 3. Meanwhile, the T-shaped groove is opened on the mandrel 8. Thus, under the driving of the air cylinder 20, the rotary driving block 9 can rotate around the fixed gear 5, thereby driving the mandrel 8 to rotate. Meanwhile, the mandrel 8 is provided with the sealing ring 10 on the side close to the workpiece limiting assembly, so that the mandrel 8 cannot be separated from the workpiece limiting assembly during use.

[0046] Further, the workpiece limiting assembly comprises the cantilever 18 connected with the mandrel 8, and the stopper 19 for limiting the workpiece 24 is arranged on the cantilever 18. Meanwhile, the column hole key 11 is arranged on the other end of the mandrel 8, and the cantilever 18 is positioned by being connected into the column hole key 11 through the locking screw 17 after being combined with the mandrel 8. The key structure 16 attached to the locking screw 17 can be used for auxiliary locking. In this way, the left end of the mandrel 8 is connected with the cantilever 18 under the action of the column hole key 11, thereby driving the stopper 19 to swing at a certain angle along the mandrel 8. Finally, the limiting and separation of the workpiece 24 can be completed. During the implementation, in order to realize the limiting of the workpiece 24, the auxiliary positioning assembly can be additionally arranged, and various auxiliary jigs in the art can be selected, which will not be described herein. For some special applications, the workpiece 24 can be directly connected to the stopper 19.

[0047] The working principle of the present application is as follows:

[0048] The workpiece 24 is placed in position. Then, the distance of the stopper 19 is adjusted as required. During the adjustment, the hand wheel 6 is manually held and dragged to the right. During this period, the inner gear 25 of the hand wheel 6 is disengaged from the fixed gear 5, and the inner gear 25 of the hand wheel 6 is engaged with the adjusting shaft 4.

[0049] Then, the hand wheel 6 is rotated to rotate the adjusting screw 3. At this time, the mandrel 8 is appropriately moved left and right in the inner hole of the fixed gear 5, thereby completing the position adjustment of the stopper 19. Thus, the stopper 19 effectively abuts against the workpiece 24, thereby satisfying the adjustment of the position limiting of different workpieces 24.

[0050] Furthermore, for the same type of workpiece, the workpiece can be quickly limited and separated under the action of the air cylinder 20. The machining speed and efficiency are improved.

[0051] As can be seen from the above description and in combination with the drawings, after the present application is adopted, the following advantages are obtained:

[0052] 1. Different workpieces can be effectively adjusted and positioned, and the stopper can better limit the workpiece to eliminate the influence of the possible combination tolerance.

[0053] 2. The independent air cylinder can quickly respond, thereby improving the clamping speed of the workpiece and the accurate positioning level, and greatly improving the production efficiency and machining quality.

[0054] 3. Simple structure, convenient adjustment, can realize the application of various types of workpieces, and reduces the production cost.

[0055] In addition, the indicated orientation or position relationship described in the present application is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or structure must have a specific orientation or be operated in a specific orientation, so it cannot be understood as a limitation on the present application.

[0056] The above is only the preferred embodiment of the present application, and is not used to limit the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A fine-tuning clamp limiting mechanism, comprising a rotary drive block, characterized in that: A cylinder is connected to the rotary drive block, a bushing is fitted inside the rotary drive block, a mandrel is inserted through the bushing, a front cover assembly and a rear cover assembly are respectively provided on both sides of the bushing on the rotary drive block, an adjusting screw is provided at one end of the mandrel, an adjusting positioning assembly is connected to the adjusting screw, and a workpiece limiting assembly is provided at the other end of the mandrel; The mandrel is threadedly connected to the adjusting screw. The mandrel has a T-slot. Under the drive of the cylinder, the rotating drive block can rotate around the fixed gear, thereby driving the mandrel to rotate. The adjustment and positioning assembly includes an adjustment shaft connected to an adjustment screw, a fixed gear is provided outside the adjustment shaft, a handwheel is movably mounted on the fixed gear, a pre-tightening assembly is provided between the adjustment shaft and the handwheel, and a positioning screw is provided on one side of the handwheel, the positioning screw being in contact with the adjustment screw; The handwheel has a precisely indexed internal gear, and the fixed gear and the adjusting shaft also have gears of the same specifications. The handwheel, fixed gear, and adjusting shaft maintain the positioning of the adjusting screw through the meshing of the gears and the action of the pre-tightening assembly.

2. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: The rotary drive block is provided with an extension fin, which is connected to the cylinder. The extension fin is provided with a positioning hole, and a slotted pin passes through the positioning hole. The slotted pin is also connected to the cylinder. Elastic retaining rings are provided on both sides of the slotted pin, and the elastic retaining rings are located on the outer side of the extension fin.

3. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: The fixed gear has a storage space, and a copper washer is provided in the storage space. The copper washer is sleeved on the adjusting shaft and contacts both the adjusting shaft and the fixed gear. A locking nut is provided at the tail end of the copper washer.

4. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: The preload component is a spring.

5. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: A sealing ring is provided on the side of the mandrel near the workpiece limiting component.

6. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: The front cover assembly includes a first front cover, and a second front cover is provided at the front end joint of the first front cover.

7. The fine-tuning clamp limiting mechanism according to claim 1, characterized in that: The workpiece limiting assembly includes a cantilever connected to a mandrel. The cantilever is provided with a stop for limiting the workpiece. The other end of the mandrel is provided with a keyhole. After the cantilever is combined with the mandrel, it is positioned by locking screws into the keyhole.

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