Adjustable positioning clamp for parts

Abstract

The utility model relates to the technical field of clamps, in particular to an adjustable positioning clamp for parts. Comprising a base, a fixed clamping plate and a movable clamping mechanism, the movable clamping mechanism comprises a movable clamping plate, a linear guide rail, a linear sliding block, a threaded base, a transmission screw, a motor base, a servo motor, a supporting device and a stabilizing device, when a part is fixed, the part is placed between the fixed clamping plate and the movable clamping plate, and then a numerical control system controls the servo motor to act to drive the transmission screw to rotate; the transmission screw is in threaded transmission fit with the threaded seat, so that the linear movement of the movable clamping plate can be realized under the matching of the linear guide rail and the linear sliding block, the movable clamping plate is close to the fixed clamping plate, finally, the quick clamping of parts is realized, and the movement distance of the movable clamping plate can be controlled through an encoder of the servo motor; and therefore, clamping and positioning of parts of different sizes can be facilitated, and the positioning efficiency when a large number of parts are fixed can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially a kind of adjustable positioning fixture of parts. BACKGROUND

[0002] Most of the current clamps, the moving mechanism between the clamping jaw and the clamping jaw is mostly directly connected, which results in that the clamping jaw can quickly increase to the upper limit of the clamping force after contacting the workpiece when clamping the workpiece. Although this can quickly complete the clamping of the workpiece, when clamping some materials with low hardness, it is difficult to control the clamping force, and the workpiece may be damaged due to excessive clamping force, causing unnecessary loss.

[0003] The prior art CN220218074U discloses an adjustable clamp for machining mechanical parts, which comprises a fixed seat, an installation groove is formed in the inside of the fixed seat, two limiting grooves are symmetrically formed on the top of the fixed seat, a guide rod is installed in the inside of the installation groove, two first movable blocks are symmetrically installed on the guide rod, two second movable blocks are symmetrically installed on the guide rod between the two first movable blocks, two moving blocks are symmetrically arranged on the top of each second movable block, and the two moving blocks on the top of each second movable block respectively pass out of the fixed seat from the inside of the two limiting grooves, and the two moving blocks on the top of each second movable block are commonly connected with a clamping jaw at one end passing out of the fixed seat. The utility model can conveniently adjust the clamping force of the clamping jaw on the workpiece, thereby reducing the probability of damage to the workpiece due to excessive clamping force.

[0004] The applicant found that the above-mentioned clamp needs to be manually rotated when clamping parts, and the threaded rod is rotated by the knob. Since the two first movable blocks are threadedly connected with the threads on the surface of the threaded rod in different directions, when the threaded rod is rotated, the two first movable blocks will move in opposite directions. By moving the two first movable blocks closer to each other, the two first movable blocks are pressed by the spring to drive the two second movable blocks to clamp the workpiece. However, the above-mentioned clamp has the problem of low part fixing efficiency when clamping a large number of parts. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of adjustable positioning fixture of parts, to improve the positioning efficiency when fixing large quantities of parts.

[0006] To achieve the above-mentioned purpose, the utility model provides an adjustable positioning fixture of parts, which comprises a base and a fixed clamp plate, the fixed clamp plate is fixed on the right side of the base, and further comprises a movable clamping mechanism.

[0007] The movable clamping mechanism comprises a movable clamping plate, linear guide rails, linear sliders, threaded seats, transmission screws, motor seats, servo motors, supporting devices and stabilizing devices, the movable clamping plate is arranged on the left side of the base, the linear guide rails are fixed on the base and are symmetrically arranged, the linear sliders are slidingly arranged on the linear guide rails and are fixedly connected with the movable clamping plate, the threaded seats are fixed below the movable clamping plate, the transmission screws are rotatably connected with the base and are in threaded transmission cooperation with the threaded seats and are located in the rectangular through cavity on the left side of the base, the motor seat is fixed on the base and is located on the side of the base close to the transmission screw, the servo motor is provided with a brake mechanism and an encoder and is fixed on the motor seat and its output shaft is connected with the transmission screw through a shaft coupling, the supporting device is arranged at the bottom of the base, and the stabilizing device is arranged on the right side of the fixed clamping plate.

[0008] Wherein, the fixed clamping plate and the movable clamping plate are respectively provided with anti-skid protrusions arranged in one-word interval.

[0009] Wherein, the supporting device comprises a guide cylinder and supporting blocks, the guide cylinder is integrally formed with the base and is located below the fixing hole of the base, and the supporting blocks are fixedly connected with the base and are symmetrically arranged at the bottom of the base and have a vertical length consistent with that of the guide cylinder.

[0010] Wherein, the stabilizing device comprises first and second supports, the first support is fixedly connected with the base and the fixed clamping plate and is located on the right side of the fixed clamping plate, and the second support is fixedly connected with the base and the fixed clamping plate and is located on the side of the fixed clamping plate away from the first support.

[0011] Wherein, the adjustable positioning clamp for parts further comprises a guide mechanism, the guide mechanism comprises guide seats and guide rods, the guide seats are fixed on the left side of the base and are symmetrically arranged, the guide rods are threadedly connected with the movable clamping plate and are slidingly connected with the guide seats and are located on the left side of the movable clamping plate.

[0012] The adjustable positioning clamp for parts of the utility model, the fixed clamping plate is fixed on the right side of the base, the movable clamping plate is arranged on the left side of the base, when the parts are fixed, the parts are placed between the fixed clamping plate and the movable clamping plate, then, the transmission screw is rotated by the servo motor driven by the numerical control system, the transmission screw is in threaded transmission cooperation with the threaded seat, so that the movable clamping plate can move linearly under the cooperation of the linear guide rail and the linear slider and approach the fixed clamping plate, finally, the parts are quickly clamped, the moving distance of the movable clamping plate can be positionally controlled by the encoder of the servo motor, so that the parts of different sizes can be clamped and positioned, and the positioning efficiency when a large number of parts are fixed can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0014] Figure 1 Figure 1 is a schematic diagram of the overall structure of the adjustable positioning fixture for parts according to the first embodiment of the present application.

[0015] Figure 2 Figure 2 is a top view of the adjustable positioning fixture for parts according to the first embodiment of the present application.

[0016] Figure 3 Figure 3 is a schematic diagram of the structure of the linear guide rail according to the first embodiment of the present application.

[0017] Figure 4 Figure 4 is a schematic diagram of the overall structure of the adjustable positioning fixture for parts according to the second embodiment of the present application.

[0018] In the figure: 101 - base, 102 - fixed clamping plate, 103 - movable clamping plate, 104 - linear guide rail, 105 - linear sliding block, 106 - threaded seat, 107 - transmission screw, 108 - motor seat, 109 - servo motor, 110 - guide cylinder, 111 - support block, 112 - first support, 113 - second support, 201 - guide seat, 202 - guide rod. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, the embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] Embodiment one:

[0021] As shown in Figures 1 to 3 Figure 1, wherein Figure 1 Figure 1 is a schematic diagram of the overall structure of the adjustable positioning fixture for parts, Figure 2 Figure 2 is a top view of the adjustable positioning fixture for parts, Figure 3 Figure 3 is a schematic diagram of the structure of the linear guide rail 104, the present application provides an adjustable positioning fixture for parts: comprising a base 101, a fixed clamping plate 102 and a movable clamping mechanism, the movable clamping mechanism comprises a movable clamping plate 103, a linear guide rail 104, a linear sliding block 105, a threaded seat 106, a transmission screw 107, a motor seat 108, a servo motor 109, a supporting device and a stabilizing device, the supporting device comprises a guide cylinder 110 and a support block 111, the stabilizing device comprises a first support 112 and a second support 113. The aforementioned scheme can improve the positioning efficiency when fixing a large number of parts, it can be understood that the aforementioned scheme can improve the fixing and positioning efficiency when fixing a large number of parts.

[0022] In the embodiment, the clamping plate 102 is fixed on the right side of the base 101, and is fixed on the base 101 through a positioning pin and a bolt.

[0023] The linear guide rail 104 is fixed on the base 101 and is symmetrically arranged, the linear sliding block 105 is slidingly arranged on the linear guide rail 104 and is fixedly connected with the movable clamping plate 103, the threaded seat 106 is fixed below the movable clamping plate 103, the transmission screw 107 is rotatably connected with the base 101 and is in threaded transmission cooperation with the threaded seat 106 and is located in a rectangular through cavity on the left side of the base 101, the motor seat 108 is fixed on the base 101 and is located on the side of the base 101 close to the transmission screw 107, the servo motor 109 is provided with a brake mechanism and an encoder and is fixed on the motor seat 108, and an output shaft of the servo motor 109 is connected with the transmission screw 107 through a shaft coupling, the supporting device is arranged at the bottom of the base 101, and the stabilizing device is arranged on the right side of the clamping plate 102. The base 101 is provided with a non-through mounting cavity, so that the linear guide rail 104 can be mounted through a countersunk bolt, the linear sliding block 105 can slide linearly on the linear guide rail 104 and is connected with the movable clamping plate 103 through a positioning pin and a bolt, the top connecting end of the threaded seat 106 is connected with the movable clamping plate 103 through a positioning pin and a bolt, a bottom threaded cavity is in threaded transmission cooperation with the transmission screw 107, the transmission screw 107 is rotatably arranged on the detachable bearing seat arranged on the base 101 through rotary bearings on both sides, the motor seat 108 is fixed through a positioning pin and a bolt, the servo motor 109 is fixed on the motor seat 108 through a bolt, the servo motor 109 is provided with a brake mechanism and an encoder, so as to stop the locking shaft and position control, and an output shaft is connected with a connecting shaft of the transmission screw 107 through a shaft coupling, the supporting device is used for cushioning the base 101, and the stabilizing device is used for improving the stress stability of the clamping plate 102.

[0024] Secondly, the clamping plate 102 and the movable clamping plate 103 are respectively provided with anti-skid protrusions arranged in a one-word interval. This structure is beneficial to improve the stability of part clamping and fixation.

[0025] Then, the guide cylinder 110 is integrally formed with the base 101 and is located below the fixing hole of the base 101; the support block 111 is fixedly connected to the base 101 and is symmetrically arranged at the bottom of the base 101, and its vertical length is the same as that of the guide cylinder 110. The support block 111 is fixed to the bottom of the base 101 by countersunk bolts. By setting the guide cylinder 110, the fixing bolts of the base 101 are guided and avoided. At the same time, under the support of the guide cylinder 110 and the support block 111, it is beneficial to prevent the accumulation of processing waste in the mounting cavity of the transmission screw 107.

[0026] Finally, the first bracket 112 is fixedly connected to the base 101 and the fixed clamping plate 102 respectively, and is located on the right side of the fixed clamping plate 102; the second bracket 113 is fixedly connected to the base 101 and the fixed clamping plate 102 respectively, and is located on the side of the fixed clamping plate 102 away from the first bracket 112. The first bracket 112 and the second bracket 113 are the same size, and are both connected to the base 101 and the fixed clamping plate 102 respectively by positioning pins and bolts, which can improve the stress stability of the fixed clamping plate 102 after installation.

[0027] When using this invention to improve the positioning efficiency of fixing a large batch of parts, the parts are first placed in the area between the fixed clamping plate 102 and the movable clamping plate 103. Then, the servo motor 109 is controlled by the CNC system to drive the transmission screw 107 to rotate. The transmission screw 107 is threadedly engaged with the threaded seat 106, so that the movable clamping plate 103 can move linearly and move closer to the fixed clamping plate 102 with the cooperation of the linear guide rail 104 and the linear slider 105. Finally, the parts are quickly clamped. The moving distance of the movable clamping plate 103 can be controlled by the encoder of the servo motor 109 to avoid over-clamping of the parts. It can also facilitate the clamping and positioning of parts of different sizes, thereby improving the positioning efficiency when fixing a large batch of parts.

[0028] Example 2:

[0029] like Figure 4 As shown, where Figure 4 This is a schematic diagram of the overall structure of the adjustable positioning fixture for parts. Based on the first embodiment, this utility model provides an adjustable positioning fixture for parts, which further includes a guide mechanism, including a guide seat 201 and a guide rod 202.

[0030] The guide seat 201 is fixed on the left side of the base 101 and is symmetrically arranged; the guide rod 202 is threadedly connected with the movable clamping plate 103 and is slidably connected with the guide seat 201 and is located on the left side of the movable clamping plate 103. The guide seat 201 is fixed by positioning pins and bolts, the positioning pins and bolts are arranged from bottom to top respectively, a matching round hole is arranged on the guide seat 201, a copper sleeve is press-fitted in the round hole, the outer threaded end of the front side of the guide rod 202 is directly connected with the threaded connecting hole on the movable clamping plate 103, and the optical axis end is slidably connected with the guide seat 201.

[0031] In the embodiment, by arranging the guide seat 201 and the guide rod 202, the linear stability of the movable clamping plate 103 can be further improved.

[0032] The above only discloses one or more preferred embodiments of the application, and cannot limit the scope of the application. Those skilled in the art can understand that the implementation of all or part of the above-mentioned embodiments and the equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A kind of adjustable positioning fixture of spare parts, including base and fixed plate, the fixed plate is fixed in the right side of the base, it is characterized by: It also includes dynamic clamping mechanism; The dynamic clamping mechanism includes dynamic clamping plate, linear guide rail, linear slider, threaded seat, transmission screw, motor base, servo motor, support device and stabilizing device, the dynamic clamping plate is arranged in the left side of the base, the linear guide rail is fixed on the base, and it is symmetrically arranged, the linear slider is slidably arranged on the linear guide rail, and is fixedly connected with the dynamic clamping plate, the threaded seat is fixed below the dynamic clamping plate, the transmission screw is rotatably connected with the base, and is threadedly driven with the threaded seat, and located in the rectangular through cavity in the left side of the base, the motor base is fixed on the base and located on the side of the base close to the transmission screw, the servo motor is provided with brake mechanism and encoder, and is fixed on the motor base, and its output shaft is connected with the transmission screw through shaft coupling, the support device is arranged at the bottom of the base, and the stabilizing device is arranged on the right side of the fixed plate.

2. The adjustable positioning fixture of spare parts according to claim 1, wherein: A plurality of anti-slip protrusions are arranged on the fixed plate and the dynamic clamping plate in a one-word interval.

3. The adjustable positioning fixture of spare parts according to claim 1, wherein: The support device includes a guide cylinder and a support block, the guide cylinder is integrally formed with the base and located below the fixed hole of the base, and the support block is fixedly connected with the base and symmetrically arranged at the bottom of the base, and the vertical length is consistent with the guide cylinder.

4. The adjustable positioning fixture of spare parts according to claim 1, wherein: The stabilizing device includes a first bracket and a second bracket, the first bracket is fixedly connected with the base and the fixed plate respectively and located on the right side of the fixed plate, and the second bracket is fixedly connected with the base and the fixed plate respectively and located on the side of the fixed plate away from the first bracket.

5. The adjustable positioning fixture of claim 1, wherein : The adjustable positioning fixture of spare parts further includes a guide mechanism, the guide mechanism includes a guide seat and a guide rod, the guide seat is fixed on the left side of the base and symmetrically arranged, and the guide rod is threadedly connected with the dynamic clamping plate and slidably connected with the guide seat, and located on the left side of the dynamic clamping plate.

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