Positioning device for precision part machining

Abstract

The invention relates to the technical field of positioning devices, discloses a positioning device for precision part machining, and solves the problems that when the device works, when objects of different shapes are clamped, stable and attached clamping is difficult to achieve, the objects are likely to deviate, machining of the objects is inaccurate, and machining efficiency is high. The device comprises a mounting box, a placement table is fixedly mounted at the upper end of the mounting box, a clamping device is mounted in the mounting box, the clamping device comprises two clamping plate assemblies, elastic block assemblies are fixedly mounted at the lower ends of the clamping plate assemblies, and torsion assemblies are rotationally mounted at the two ends of each clamping plate assembly; a contraction plate is installed at the upper end of the torsion assembly, the torsion assembly comprises a fixed pipe shell, a torsion spring is rotationally installed in the fixed pipe shell, and a movable ring is fixedly installed at the lower end of the fixed pipe shell.

Description

Technical Field

[0001] The invention relates to the technical field of positioning devices, and in particular to a positioning device used for precision parts processing. Background Art

[0002] Parts processing is a modern manufacturing technology that manufactures or produces parts, subcomponents or assemblies that make up machines and equipment. This technology is widely used in different industries and fields. Precision parts are a type of accessory widely used in the automotive, communications, medical, watches, mobile phones, computers and other industries. Unlike ordinary parts, precision parts are more precise and more suitable for industries with high requirements for precision. Precision parts are often used for processing mechanical workpieces.

[0003] The existing Chinese patent with publication number CN221583321U discloses a high-precision mechanical parts processing and positioning device. When the processing and positioning device is in use, the motor is controlled to rotate forward and reversely through a rotary switch on the upper surface of the base near the motor position to drive the bidirectional screw to rotate. When the bidirectional screw rotates, it can drive the second connecting frames on the two third ball nut seats to approach or move away from each other. When approaching, the clamping plate and the clamping rubber pad can fix and clamp the parts.

[0004] When the device is working, it is difficult to achieve stable and close clamping of objects of different shapes, which easily causes the object to deviate, resulting in inaccurate processing of the object and loss of material, greatly reducing the practicality of the device. Summary of the invention

[0005] The purpose of the present invention is to provide a positioning device for precision parts processing. By using this device to work, the problem that when the device is working, it is difficult to achieve stable and close clamping of objects of different shapes, which easily causes the object to deviate, resulting in inaccurate processing of the object and causing material loss is solved.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a positioning device for precision parts processing, comprising an installation box, a placing table is fixedly installed on the upper end of the installation box, a clamping device is installed inside the installation box, the clamping device comprises two groups of clamping plate assemblies, an elastic block assembly is fixedly installed on the lower end of the clamping plate assembly, torsion assemblies are rotatably installed on both ends of the clamping plate assembly, a contraction plate is installed on the upper end of the torsion assembly, and the torsion assembly comprises a fixed tube shell, a torsion spring is rotatably installed inside the fixed tube shell, and a moving ring is fixedly installed on the lower end of the fixed tube shell; the contraction plate comprises a connecting rod, the connecting rod is located inside the clamping plate assembly, and a card and a block are fixedly installed on one end of the connecting rod located inside the clamping plate assembly, and the card and the block match the clamping plate assembly. When we need to clamp the object on the placing table, the clamping plate assembly is started to move toward the center The center of the clamping plate assembly moves, and when the clamping plate assembly approaches the object, the elastic block assembly contacts the object first, and the parts at both ends of the clamping plate assembly rotate inward to clamp it. When the object is square, the parts at both ends of the clamping plate assemblies on both sides rotate inward to clamp it. Due to the rotation of the torsion spring inside the fixed tube shell, the connecting rod is driven to move into the clamping plate assembly. The two sides of the clamping plate assembly first clamp inward, and then the V-shaped state is turned to flat to clamp the object. When the object is round, the parts at both ends of the clamping plate assemblies on both sides rotate inward to clamp it. Due to the rotation of the torsion spring inside the fixed tube shell, the connecting rod is driven to move into the clamping plate assembly. The two sides of the clamping plate assembly first rotate inward to clamp it, so that the two groups of clamping plate assemblies clamp the object in a V shape, so that the device can maintain stable clamping when facing different objects.

[0007] Preferably, the installation box includes an outer shell, and four groups of square grooves are opened on the upper end of the outer shell, and the square grooves match the fixed tube shells. The four groups of fixed tube shells on the clamping plate assembly slide in the square grooves to complete the rotation of the two groups of clamping plate assemblies, so that they form a V-shaped stable clamping of the object.

[0008] Preferably, two sets of square grooves 2 are opened at the upper end of the shell, and the square grooves 2 match the elastic block assemblies. The two sets of elastic block assemblies on the clamping plate assemblies slide in the square grooves 2 to complete the coordinated rotation of the two sets of clamping plate assemblies and the torsion assemblies, thereby completing the stable clamping of square and round objects.

[0009] Preferably, a rotating motor is fixedly installed inside the shell, a forward and reverse screw rod 1 is fixedly installed on the driving end of the rotating motor, a gear 1 is rotatably installed on the middle section of the forward and reverse screw rod 1, a connecting block 1 is rotatably installed on the other end of the forward and reverse screw rod 1, and an elastic block assembly is threadedly installed on the outer side of the forward and reverse screw rod 1. When we need to clamp an object on the placement table, we start the rotating motor to drive a pair of forward and reverse screw rods and two groups of clamping plate assemblies inward for clamping, and at the same time drive the elastic block assembly close to the object, so that the two sides of the two groups of clamping plate assemblies are first clamped inward to complete the clamping of the object.

[0010] Preferably, a gear belt 1 is meshedly installed on the outer side of the gear 1, and a gear 2 is meshedly installed inside the other end of the gear belt 1, and positive and negative screw rods 2 are rotatably installed at both ends of the gear 2, and two sets of moving rings are threadedly installed on the outer side of the positive and negative screw rods 2, and a connecting block 2 is rotatably installed on the end of the positive and negative screw rods 2 close to the rotating motor, and the other end of the connecting block 2 is fixedly connected to the shell, and a gear 3 is fixedly installed on the other end of the positive and negative screw rods 2, and a gear belt 2 is meshedly arranged on the outer side of the gear 3, and a gear 4 is meshedly installed on the inner side of the other end of the gear belt 2, and a positive and negative screw rod 3 is fixedly installed on the end of the gear 4 close to the rotating motor, and the outer thread of the positive and negative screw rod 3 Two sets of moving rings are installed, and the other end of the forward and reverse screw rods three is rotatably installed with a connecting block three, and the other end of the connecting block three is fixedly connected to the outer shell. When we need to clamp the object on the placement table, we start the rotating motor to drive the forward and reverse screw rods to drive the two sets of clamping plate assemblies inward for clamping, and at the same time drive gear one to drive gear belt one to rotate, gear belt one drives gear two to rotate, gear two drives forward and reverse screw rods two to start rotating, and drives the two sets of clamping plate assemblies inward for clamping, and at the same time, the forward and reverse screw rods two drive gear belt two to rotate, and gear four drives the forward and reverse screw rods three to rotate, so as to complete the clamping of the object on the placement table.

[0011] Preferably, the clamping plate assembly includes two groups of clamping plates, each group of clamping plates is provided with a T-slot, a T-shaped connecting plate is fixedly installed at one end of the clamping plate, the T-shaped connecting plate matches the T-slot, and pressure sensors are fixedly installed on the sides of the two groups of clamping plates close to each other. When we clamp the object inward through the two groups of clamping plate assemblies, the two groups of clamping plates move in a plane when the elastic block assembly does not contact the object, and when the object contacts the object, the outer sides of the two groups of clamping plates clamp the object in a V-shape through the contraction of the elastic block assembly. When facing an obstructed object, the two groups of clamping plates clamp the object in different planes.

[0012] Preferably, a T-slot 2 is provided on one side of the clamping plate close to the connecting rod, and a card and a block are slidably installed inside the T-slot 2. When the two sets of clamping plates are clamped in a V shape, the clamping plates rotate inward, causing the connecting rod to slide inward of the T-slot 2, thereby tightly clamping the object.

[0013] Preferably, a buffer pad is installed on the side where the two groups of clamping plates are close to each other, and multiple groups of elastic members are fixedly installed on the inner side of the buffer pad. After the two groups of clamping plates are clamped, the vibration generated when the object is clamped is buffered by the buffer pad.

[0014] Preferably, the two groups of clamping plates are centrally rotatably mounted with a rotating shaft, and the two groups of clamping plates rotate around the rotating shaft, and the two groups of clamping plates complete the rotation through the central rotating shaft.

[0015] Preferably, the elastic block assembly includes a connecting shell, an elastic member 2 is fixedly installed inside the connecting shell, an elastic block is slidably installed on the inner side of the elastic member 2, a sliding block is fixedly installed on the lower end of the connecting shell, and the sliding block is threadedly connected to the positive and negative screw rods. When we clamp the object inwardly through the two sets of clamping plate assemblies, the sliding block is driven to move by the positive and negative screw rods, and contacts the object through the elastic block, so that the centers of the two sets of clamping plates are delayed in contacting the object, causing the two sides of the two sets of clamping plates to clamp inward first, thereby completing the clamping of objects of different shapes.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention proposes a positioning device for precision parts processing. When we need to clamp an object on a placement table, we start the clamping plate assembly to move toward the center. When the clamping plate assembly approaches the object, the elastic block assembly contacts the object first, and parts at both ends of the clamping plate assembly rotate inward to clamp it. When the object is square, parts at both ends of the clamping plate assemblies on both sides rotate inward to clamp it. Due to the rotation of the torsion spring inside the fixed tube shell, the connecting rod is driven to move toward the inside of the clamping plate assembly. The two side parts of the clamping plate assembly first clamp inward, and then the object is clamped flatly from the V-shaped state. When the object is round, parts at both ends of the clamping plate assemblies on both sides rotate inward to clamp it. Due to the rotation of the torsion spring inside the fixed tube shell, the connecting rod is driven to move toward the inside of the clamping plate assembly. The two sides of the clamping plate assembly first rotate inward to clamp it, so that the two groups of clamping plate assemblies are in a V-shape to clamp the object, so that the device can maintain stable clamping when facing different objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the shell structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the installation box of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the clamping device of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the clamping plate assembly of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the torsion assembly, the contraction plate and the buffer pad of the present invention;

[0024] Figure 7 It is a schematic diagram of the planar structure of the torsion assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the planar structure of the elastic block assembly of the present invention.

[0026] In the figure: 1. Installation box; 11. Housing; 111. Square slot 1; 112. Square slot 2; 12. Rotating motor; 13. Positive and negative screw rod 1; 131. Gear 1; 132. Connecting block 1; 14. Gear belt 1; 141. Gear 2; 15. Positive and negative screw rod 2; 151. Connecting block 2; 152. Gear 3; 16. Gear belt 2; 17. Gear 4; 18. Positive and negative screw rod 3; 19. Connecting block 3; 2. Placement table; 3. Clamping device; 31. Clamping plate Assembly; 311, clamping plate; 3111, T-slot; 312, T-connecting plate; 313, T-slot II; 32, torsion assembly; 321, fixed tube shell; 322, torsion spring; 323, moving ring; 33, elastic block assembly; 331, connecting shell; 332, elastic part II; 333, elastic block; 334, sliding block; 34, contraction plate; 341, connecting rod; 342, card and block; 35, buffer pad; 351, elastic part; 36, rotating shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0029] Combination Figure 1 , Figure 6-7A positioning device for precision parts processing includes an installation box 1, a placement table 2 is fixedly installed on the upper end of the installation box 1, a clamping device 3 is installed inside the installation box 1, the clamping device 3 includes two groups of clamping plate assemblies 31, an elastic block assembly 33 is fixedly installed on the lower end of the clamping plate assembly 31, a torsion assembly 32 is rotatably installed on both ends of the clamping plate assembly 31, a contraction plate 34 is installed on the upper end of the torsion assembly 32, the torsion assembly 32 includes a fixed tube shell 321, a torsion spring 322 is rotatably installed inside the fixed tube shell 321, and a moving ring 323 is fixedly installed on the lower end of the fixed tube shell 321; the contraction plate 34 includes a connecting rod 341, the connecting rod 341 is located inside the clamping plate assembly 31, and a card and a block 342 are fixedly installed on one end of the connecting rod 341 located inside the clamping plate assembly 31, and the card and the block 342 match the clamping plate assembly 31. When we need to clamp an object on the placement table 2, start the clamping plate assembly 31 When the object is round, the parts at both ends of the clamping plate assemblies 31 on both sides rotate inwards to clamp the object. When the object is square, the parts at both ends of the clamping plate assemblies 31 on both sides rotate inwards to clamp the object. Due to the rotation of the torsion spring 322 inside the fixed tube shell 321, the connecting rod 341 is driven to move into the clamping plate assembly 31. The two sides of the clamping plate assembly 31 first clamp inwards, and then the object is clamped flatly from the V-shaped state. When the object is round, the parts at both ends of the clamping plate assemblies 31 on both sides rotate inwards to clamp the object. Due to the rotation of the torsion spring 322 inside the fixed tube shell 321, the connecting rod 341 is driven to move into the clamping plate assembly 31. The two sides of the clamping plate assembly 31 first rotate inwards to clamp, so that the two groups of clamping plate assemblies 31 clamp the object in a V shape, so that the device can maintain stable clamping when facing different objects.

[0030] Combination Figure 1-2 , Figure 4 , Figure 6 A positioning device for precision parts processing, the installation box 1 includes a shell 11, the upper end of the shell 11 is provided with four groups of square grooves 111, the square grooves 111 are matched with the fixed tube shells 321, the four groups of fixed tube shells 321 on the clamping plate assembly 31 slide in the square grooves 111 to complete the rotation of the two groups of clamping plate assemblies 31, so that they form a V-shaped stable clamping of the object.

[0031] Combination Figure 2 and Figure 4A positioning device for precision parts processing, two sets of square grooves 112 are opened at the upper end of the shell 11, the square grooves 112 match the elastic block components 33, and the two sets of elastic block components 33 on the clamping plate components 31 slide in the square grooves 112 to complete the coordinated rotation of the two sets of clamping plate components 31 and the torsion components 32, thereby completing the stable clamping of square and round objects.

[0032] Combination Figure 2 and Figure 3 A positioning device for precision parts processing, a rotating motor 12 is fixedly installed inside the shell 11, a forward and reverse screw rod 13 is fixedly installed on the driving end of the rotating motor 12, a gear 131 is rotatably installed on the middle section of the forward and reverse screw rod 13, a connecting block 132 is rotatably installed on the other end of the forward and reverse screw rod 13, and an elastic block assembly 33 is threadedly installed on the outer side of the forward and reverse screw rod 13. When we need to clamp an object on the placement table 2, we start the rotating motor 12 to drive the forward and reverse screw rod 13 to clamp the two groups of clamping plate assemblies 31 inwardly, and at the same time drive the elastic block assembly 33 close to the object, so that the two sides of the two groups of clamping plate assemblies 31 are first clamped inwardly to complete the clamping of the object.

[0033] Combination Figure 2 and Figure 3 A positioning device for precision parts processing, wherein a gear belt 14 is meshedly installed on the outer side of a gear 131, and a gear 2 141 is meshedly installed on the other end of the gear belt 14, and two positive and negative screw rods 15 are rotatably installed at both ends of the gear 2 141, and two sets of moving rings 323 are threadedly installed on the outer side of the positive and negative screw rods 15, and a connecting block 2 151 is rotatably installed on the end of the positive and negative screw rods 15 close to the rotating motor 12, and the other end of the connecting block 151 is fixedly connected to the housing 11, and a gear 3 152 is fixedly installed on the other end of the positive and negative screw rods 15, and a gear belt 2 16 is meshedly arranged on the outer side of the gear 3 152, and a gear 4 17 is meshedly installed on the inner side of the other end of the gear belt 2 16, and a positive and negative screw rod 3 18 is fixedly installed on the end of the gear 4 17 close to the rotating motor 12, Two sets of movable rings 323 are installed on the outer thread of the reverse screw rod 3 18, and the other end of the positive and negative screw rod 3 18 is rotatably installed with a connecting block 3 19, and the other end of the connecting block 3 19 is fixedly connected to the shell 11. When we need to clamp the object on the placement table 2, we start the rotating motor 12 to drive the positive and negative screw rod 1 13 to clamp the two sets of clamping plate assemblies 31 inward, and at the same time drive the gear 1 131 to drive the gear belt 1 14 to rotate, the gear belt 1 14 drives the gear 2 141 to rotate, the gear 2 141 drives the positive and negative screw rod 2 15 to start rotating, and drives the two sets of clamping plate assemblies 31 to clamp inward, and at the same time the positive and negative screw rod 2 15 drives the gear belt 2 16 to rotate, and the gear 4 17 drives the positive and negative screw rod 3 18 to rotate, so as to complete the clamping of the object on the placement table 2.

[0034] Combination Figure 4 and Figure 5 , a positioning device for precision parts processing, the clamping plate assembly 31 includes two groups of clamping plates 311, each group of clamping plates 311 is provided with a T-slot 3111, one end of the clamping plate 311 is fixedly installed with a T-shaped connecting plate 312, the T-shaped connecting plate 312 matches the T-slot 3111, and the two groups of clamping plates 311 are fixedly installed with a pressure sensor 33 on the side close to each other. When we clamp the object inward through the two groups of clamping plate assemblies 31, the two groups of clamping plates 311 are in a plane and move when the elastic block assembly 33 does not contact the object. When the object contacts the object, the outer sides of the two groups of clamping plates 311 are clamped in a V shape through the contraction of the elastic block assembly 33. When facing an obstructed object, the two groups of clamping plates 311 clamp the object in different planes.

[0035] Combination Figure 6 and Figure 7 A positioning device for precision parts processing, a T-slot 2 313 is provided on one side of the clamping plate 311 close to the connecting rod 341, and a card and a block 342 are slidably installed inside the T-slot 2 313. When the two sets of clamping plates 311 are clamped in a V shape, the clamping plates 311 rotate inwardly, causing the connecting rod 341 to slide inwardly of the T-slot 2 313, thereby tightly clamping the object.

[0036] Combination Figure 5 A positioning device for precision parts processing, a buffer pad 35 is installed on the side where two sets of clamping plates 311 are close to each other, and multiple sets of elastic members 351 are fixedly installed on the inner side of the buffer pad 35. After the two sets of clamping plates 311 are clamped, the vibration generated when the object is clamped is buffered by the buffer pad 35.

[0037] Combination Figure 5 and Figure 7 A positioning device for precision parts processing, the center of the two sets of clamping plates 311 is rotatably installed with a rotating shaft 36, the two sets of clamping plates 311 rotate around the rotating shaft 36, and the two sets of clamping plates 311 complete the rotation through the central rotating shaft 36.

[0038] Combination Figure 4 and Figure 8, a positioning device for precision parts processing, the elastic block assembly 33 includes a connecting shell 331, an elastic member 332 is fixedly installed inside the connecting shell 331, an elastic block 333 is slidably installed on the inner side of the elastic member 332, a sliding block 334 is fixedly installed at the lower end of the connecting shell 331, and the sliding block 334 is threadedly connected with the positive and negative screw rods 13. When we clamp the object inward through the two sets of clamping plate assemblies 31, the sliding block 334 is driven to move through the positive and negative screw rods 13, and the elastic block 333 contacts the object, so that the center of the two sets of clamping plates 311 is delayed in contact with the object, causing the two sides of the two sets of clamping plates 311 to clamp inward first, thereby completing the clamping of objects of different shapes.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for precision parts processing, comprising an installation box (1), a placing table (2) is fixedly installed on the upper end of the installation box (1), a clamping device (3) is installed inside the installation box (1), the clamping device (3) comprises two groups of clamping plate assemblies (31), an elastic block assembly (33) is fixedly installed on the lower end of the clamping plate assembly (31), a torsion assembly (32) is rotatably installed on both ends of the clamping plate assembly (31), and a shrinking plate (34) is installed on the upper end of the torsion assembly (32), characterized in that: The torsion assembly (32) comprises a fixed tube shell (321), a torsion spring (322) is rotatably mounted inside the fixed tube shell (321), and a moving ring (323) is fixedly mounted at the lower end of the fixed tube shell (321); The shrinking plate (34) comprises a connecting rod (341), the connecting rod (341) is located inside the clamping plate assembly (31), and a card and a block (342) are fixedly installed on one end of the connecting rod (341) located inside the clamping plate assembly (31), and the card and the block (342) match the clamping plate assembly (31).

2. A positioning device for precision parts processing according to claim 1, characterized in that: The installation box (1) comprises an outer shell (11), and the upper end of the outer shell (11) is provided with four groups of square grooves (111), and the square grooves (111) match the fixed tube shell (321).

3. A positioning device for precision parts processing according to claim 2, characterized in that: The upper end of the housing (11) is provided with two sets of second square grooves (112), and the second square grooves (112) match the elastic block assembly (33).

4. A positioning device for precision parts processing according to claim 3, characterized in that: A rotating motor (12) is fixedly mounted inside the housing (11); a forward and reverse screw rod (13) is fixedly mounted on the driving end of the rotating motor (12); a gear (131) is rotatably mounted on the middle section of the forward and reverse screw rod (13); a connecting block (132) is rotatably mounted on the other end of the forward and reverse screw rod (13); and an elastic block assembly (33) is threadedly mounted on the outer side of the forward and reverse screw rod (13).

5. A positioning device for precision parts processing according to claim 4, characterized in that: The outer side of the gear one (131) is meshedly mounted with a gear belt one (14), the other end of the gear belt one (14) is meshedly mounted with a gear two (141) inside, the two ends of the gear two (141) are rotatably mounted with forward and reverse screw rods (15), the outer side of the forward and reverse screw rods (15) are threadedly mounted with two sets of moving rings (323), the end of the forward and reverse screw rods (15) close to the rotating motor (12) is rotatably mounted with a connecting block two (151), the other end of the connecting block two (151) is fixedly connected to the housing (11), and the other end of the forward and reverse screw rods (15) is fixedly connected to the housing (11). One end is fixedly mounted with a gear three (152), the outer side of the gear three (152) is meshed with a gear belt two (16), the other end of the gear belt two (16) is meshed with a gear four (17) on the inner side, the end of the gear four (17) close to the rotating motor (12) is fixedly mounted with a forward and reverse screw rod three (18), the outer side of the forward and reverse screw rod three (18) is threadedly mounted with two groups of moving rings (323), the other end of the forward and reverse screw rod three (18) is rotatably mounted with a connecting block three (19), and the other end of the connecting block three (19) is fixedly connected to the housing (11).

6. A positioning device for precision parts processing according to claim 1, characterized in that: The clamping plate assembly (31) comprises two groups of clamping plates (311), each group of clamping plates (311) is provided with a T-shaped slot (3111), one end of the clamping plate (311) is fixedly mounted with a T-shaped connecting plate (312), the T-shaped connecting plate (312) matches the T-shaped slot (3111), and a pressure sensor (33) is fixedly mounted on one side of the two groups of clamping plates (311) close to each other.

7. A positioning device for precision parts processing according to claim 6, characterized in that: A second T-shaped slot (313) is provided on one side of the clamping plate (311) close to the connecting rod (341), and a card and a block (342) are slidably installed inside the second T-shaped slot (313).

8. A positioning device for precision parts processing according to claim 6, characterized in that: A buffer pad (35) is installed on one side of the two groups of clamping plates (311) that are close to each other, and a plurality of groups of elastic members (351) are fixedly installed on the inner side of the buffer pad (35).

9. A positioning device for precision parts processing according to claim 6, characterized in that: A rotating shaft (36) is rotatably mounted at the center of the two groups of clamping plates (311), and the two groups of clamping plates (311) rotate around the rotating shaft (36).

10. The positioning device for precision parts processing according to claim 1, characterized in that: The elastic block assembly (33) comprises a connecting shell (331), an elastic member 2 (332) is fixedly installed inside the connecting shell (331), an elastic block (333) is slidably installed inside the elastic member 2 (332), a sliding block (334) is fixedly installed at the lower end of the connecting shell (331), and the sliding block (334) is threadedly connected to the forward and reverse screw rods 1 (13).

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