Locking mechanism of pin shaft positioning tool

Abstract

The utility model relates to the technical field of positioning tools, in particular to a locking mechanism of a pin shaft positioning tool, which comprises a base and a support column, the top end of the base is fixedly connected with the support column, the top end of the support column is fixedly connected with an adjusting assembly, the upper end of the adjusting assembly is fixedly connected with a gas buffering assembly, and one side of the gas buffering assembly is fixedly connected with a clamping assembly. The adjusting assembly comprises a double-ring plate, the inner side of the double-ring plate is rotationally connected with the inner side of the machining table, the outer side of the double-ring plate is fixedly connected with a hand rotating handle, the inner side of the double-ring plate is fixedly connected with a slope plate, the bottom end of the machining table is fixedly connected with an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected with a connecting disc, and the top end of the connecting disc is fixedly connected with a toothed plate. According to the pin shaft positioning tool, when a pin shaft body of a workpiece is fixed by the pin shaft positioning tool, lossless clamping of the workpiece is achieved through the design of a buffering mechanism of gas pressure, and the percent of pass of the machined pin shaft body of the workpiece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning frock technical field, concretely is a kind of locking mechanism of pin shaft positioning frock. BACKGROUND

[0002] Pin shaft positioning frock is a kind of tool or equipment for ensuring that workpiece reaches accurate position in assembly or machining process, it restricts the degree of freedom of workpiece by using positioning pin, so that workpiece can be fixed or assembled in predetermined position, pin shaft positioning frock can be used in various mechanical assembly occasions;

[0003] The locking mechanism of pin shaft positioning frock is the key component for ensuring that workpiece is stably fixed in machining or assembly process, the design of this mechanism needs to consider the convenience of operation, the reliability of locking and the adaptability to workpiece;

[0004] In the current shaft pin machining positioning practice, the method of clamping plate directly clamping shaft pin is usually used for fixing, however, this method lacks buffering mechanism, and it is easy to cause damage to the surface of shaft pin, and even lead to its deformation, this direct clamping method can cause unqualified problem of shaft pin in machining process, therefore, aiming at the above problems, a locking mechanism of pin shaft positioning frock is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of locking mechanism of pin shaft positioning frock, to solve the method of clamping plate directly clamping shaft pin is fixed, it is easy to cause damage to the surface of shaft pin, and even lead to its deformation, this direct clamping method can cause unqualified problem of shaft pin in machining process.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a locking mechanism of pin shaft positioning frock, including base and support, the base top fixedly connected with support, the support top fixedly connected with adjusting assembly, adjusting assembly upper end fixedly connected with gas buffer assembly, gas buffer assembly one side fixedly connected with clamping assembly, adjusting assembly includes double ring board, double ring board inboard rotates with processing table inboard and connects, double ring board outboard fixedly connected with hand handle, double ring board inboard fixedly connected with slope board, processing table bottom fixedly connected with electric telescopic link, electric telescopic link bottom fixedly connected with connecting disc, connecting disc top fixedly connected with toothed plate, gas buffer assembly includes air cylinder, air cylinder inboard is equipped with gas groove, gas groove inboard is pasted with first rubber ring outboard, first rubber ring inboard fixedly connected with first passive column, double column link groove inboard slide connection of first passive column opening has double column connecting rod, double column connecting rod one side fixedly connected with second passive column, second passive column outboard fixedly connected with second rubber ring, air cylinder one side fixedly connected with return spring, clamping assembly includes outer frame, the outer frame inboard is equipped with limit square groove, the outer frame inboard slide connection has rectangle plate, rectangle plate one side fixedly connected with rubber arc plate, rectangle plate outboard fixedly connected with rail, rectangle plate bottom fixedly connected with rack.

[0008] As the further optimization of the utility model, the top end of the support is fixedly connected with the bottom end of the processing table, a spacing is arranged between the base and the processing table, the processing table has a shape of a slotted cylinder, and a ring-shaped groove is arranged on the inner side of the processing table close to the double ring board.

[0009] As the further optimization of the utility model, the double ring board has a shape of a circular ring body at both ends, the inner side of the double ring board is embedded in the inner side of the groove of the processing table, and the slope board is in contact with the first passive column on one side.

[0010] As the further optimization of the utility model, a sliding groove is arranged on the inner side of the processing table close to the toothed plate, the toothed plate slides on the inner side of the processing table, the toothed plate has a shape of a rectangular body, the toothed plate is fixedly connected with teeth at the top end, and the number of the toothed plates is the same as the number of the sliding grooves of the processing table.

[0011] As the further optimization of the utility model, the bottom end of the air cylinder is fixedly connected with the top end of the processing table, the gas groove has a shape of a cylinder, the gas groove penetrates the inner side of the air cylinder, the first passive column has a shape of a cylinder, the second passive column has a shape of a cylinder, and one end of the first passive column and one end of the second passive column are embedded in the inner side of the gas groove.

[0012] As the further optimization of the utility model, wherein: the second rubber ring outside and the air groove inside of the air cylinder are attached, the shape of the double column connecting rod is two sections of cylinder, the shape of the double column connecting groove is two sections of cylinder, the double column connecting groove penetrates one end of the first passive column, the second passive column is fixedly connected with the rectangular plate.

[0013] As the further optimization of the utility model, wherein: the outer frame bottom end is fixedly connected with the processing table top end, the rectangular plate is slidably connected in the limiting square groove of the outer frame through the rail, the both sides of the rectangular plate are fixedly connected with the rails, the return spring is fixedly connected with the rectangular plate, and the rubber arc plate one side is attached with the pin shaft body outside.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] In the utility model, the pin shaft positioning tool is fixed with the workpiece pin shaft body, the buffer mechanism of the gas pressure is designed, the workpiece is non-destructively clamped and fixed, the rubber arc plate in the device contacts the workpiece pin shaft body, the gas pressure in the gas groove is increased, the buffer and shock absorption effects in the clamping process are provided by using the gas pressure buffer effect, the workpiece damage caused by direct clamping is effectively prevented, in addition, when the rubber arc plate is tightly attached with the pin shaft body outside, the connecting disc is driven to move upward by the electric telescopic rod, the workpiece is locked, the stability of the workpiece in the processing or assembly process is ensured, the workpiece falling or displacement caused by improper fixing is avoided, the qualified rate of the workpiece pin shaft body after processing is improved, the workpiece surface is protected from damage, and the processing efficiency and quality are improved.

[0016] Specifically, after the rubber arc plate in the device contacts the workpiece pin shaft body, the gas pressure in the gas groove is increased, the buffer and shock absorption effects in the clamping process are provided by using the gas pressure buffer effect, the workpiece damage caused by direct clamping is effectively prevented, in addition, when the rubber arc plate is tightly attached with the pin shaft body outside, the connecting disc is driven to move upward by the electric telescopic rod, the workpiece is locked, the stability of the workpiece in the processing or assembly process is ensured, the workpiece falling or displacement caused by improper fixing is avoided, the qualified rate of the workpiece pin shaft body after processing is improved, the workpiece surface is protected from damage, and the processing efficiency and quality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the base structure schematic view of the utility model;

[0019] Figure 3 It is the processing table structure schematic view of the utility model;

[0020] Figure 4 It is the air cylinder structure schematic view of the utility model;

[0021] Figure 5 It is the rectangular plate structure schematic view of the utility model.

[0022] In the drawing: 1, base; 2, support column;

[0023] 3, adjusting assembly; 31, double ring plate; 32, processing table; 33, hand handle; 34, slope plate; 35, electric telescopic rod; 36, connecting disc; 37, tooth plate;

[0024] 4, gas buffer assembly; 41, air cylinder; 42, air groove; 43, first passive column; 44, first rubber ring; 45, double-column connecting rod; 46, double-column connecting groove; 47, second passive column; 48, second rubber ring; 49, reset spring;

[0025] 5, clamping assembly; 51, outer frame; 52, limiting square groove; 53, rectangular plate; 54, rubber arc plate; 55, rail; 56, rack;

[0026] 6, pin shaft body. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0029] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0030] The locking mechanism of the pin shaft positioning tool comprises a base 1 and a support column 2, the top end of the base 1 is fixedly connected with the support column 2, the top end of the support column 2 is fixedly connected with an adjusting assembly 3, the upper end of the adjusting assembly 3 is fixedly connected with a gas buffer assembly 4, one side of the gas buffer assembly 4 is fixedly connected with a clamping assembly 5, the adjusting assembly 3 comprises a double-ring plate 31, the inner side of the double-ring plate 31 is rotatably connected with the inner side of a machining table 32, the outer side of the double-ring plate 31 is fixedly connected with a hand crank 33, the inner side of the double-ring plate 31 is fixedly connected with a slope plate 34, the bottom end of the machining table 32 is fixedly connected with an electric telescopic rod 35, the bottom end of the electric telescopic rod 35 is fixedly connected with a connecting disc 36, the top end of the connecting disc 36 is fixedly connected with a toothed plate 37, the gas buffer assembly 4 comprises a gas cylinder 41, a gas groove 42 is formed in the inner side of the gas cylinder 41, the inner side of the gas groove 42 is attached to the outer side of a first rubber ring 44, the inner side of the first rubber ring 44 is fixedly connected with a first passive column 43, a double-column connecting groove 46 formed in the first passive column 43 is slidably connected with a double-column connecting rod 45, one side of the double-column connecting rod 45 is fixedly connected with a second passive column 47, the outer side of the second passive column 47 is fixedly connected with a second rubber ring 48, one side of the gas cylinder 41 is fixedly connected with a return spring 49, the clamping assembly 5 comprises an outer frame 51, a limiting square groove 52 is formed in the inner side of the outer frame 51, the inner side of the outer frame 51 is slidably connected with a rectangular plate 53, one side of the rectangular plate 53 is fixedly connected with a rubber arc plate 54, the outer side of the rectangular plate 53 is fixedly connected with a rail 55, and the bottom end of the rectangular plate 53 is fixedly connected with a rack 56.

[0031] As a further implementation of the scheme, the top end of the support column 2 is fixedly connected with the bottom end of the machining table 32, a spacing is arranged between the base 1 and the machining table 32, the machining table 32 is in the shape of a slotted cylinder, and a ring-shaped groove is formed in the inner side of the machining table 32 close to the double-ring plate 31 to provide a moving space for the connecting disc 36, and the groove of the machining table 32 plays a role in limiting the rotation of the double-ring plate 31;

[0032] As a further implementation of the scheme, the double-ring plate 31 is in the shape of a circular ring body at both ends, the inner side of the double-ring plate 31 is embedded in the inner side of the groove of the machining table 32, one side of the slope plate 34 is attached to one side of the first passive column 43, the number of the slope plates 34 is the same as that of the first passive columns 43, and the slope plates 34 are used to extrude the first passive columns 43 when the double-ring plate 31 rotates, so as to force the first passive columns 43 to move;

[0033] As a further implementation of the scheme, the machining table 32 is provided with a sliding groove near the inner side of the tooth plate 37, the tooth plate 37 slides on the inner side of the machining table 32, the shape of the tooth plate 37 is a rectangular body, the top end of the tooth plate 37 is fixedly connected with a tooth, the number of tooth plates 37 is the same as the number of sliding grooves of the machining table 32, which facilitates the upward movement of multiple tooth plates 37 through the connecting disc 36 after the electric telescopic rod 35 is started, and through the meshing of the tooth plate 37 and the rack 56, the rectangular plate 53 is locked, ensuring the stability during machining of the pin shaft body 6.

[0034] As a further implementation of the scheme, the bottom end of the air cylinder 41 is fixedly connected with the top end of the machining table 32, the air groove 42 is cylindrical in shape, the air groove 42 penetrates the inner side of the air cylinder 41, the first passive column 43 is cylindrical in shape, the second passive column 47 is cylindrical in shape, one end of the first passive column 43 and one end of the second passive column 47 are embedded and installed in the inner side of the air groove 42, the outer side of the second rubber ring 48 is in contact with the inner side of the air groove 42 of the air cylinder 41, the shape of the double-column connecting rod 45 is two sections of cylinder, the double-column connecting groove 46 is two sections of cylinder in shape, the double-column connecting groove 46 penetrates one end of the first passive column 43, the second passive column 47 is fixedly connected with the rectangular plate 53, and the air pressure buffering effect is utilized to provide buffering and damping effect during clamping, effectively preventing workpiece damage caused by direct clamping.

[0035] As a further implementation of the scheme, the bottom end of the outer frame 51 is fixedly connected with the top end of the machining table 32, the rectangular plate 53 is slidably connected in the limiting square groove 52 of the outer frame 51, the rails 55 are fixedly connected to both sides of the rectangular plate 53, the return spring 49 is fixedly connected with the rectangular plate 53, and the rubber arc plate 54 is in contact with the outer side of the pin shaft body 6 on one side, under the pushing of air pressure, multiple rubber arc plates 54 simultaneously clamp the pin shaft body 6, and the rectangular plate 53 is reset by the return spring 49.

[0036] Work flow: when the pin shaft body 6 is fixed, prevent the pin shaft body 6 from being damaged, place the pin shaft body 6 between the plurality of rubber arc plates 54, rotate the hand knob 33 to drive the double ring plate 31 to rotate, the double ring plate 31 is rotatably connected with the machining table 32, and the double ring plate 31 plays a limiting role when rotating, the double ring plate 31 drives the slope plate 34 to rotate, the plurality of slope plates 34 simultaneously push the corresponding first passive column 43 to move, under the sealing action of the first rubber ring 44, the gas between the first passive column 43 and the second rubber ring 48 can be prevented from overflowing between the air cylinder 41 and the first passive column 43, the double-column connecting rod 45 can prevent the gas from overflowing between the air cylinder 41 and the second passive column 47, when the first passive column 43 moves towards the second passive column 47, the double-column connecting rod 45 slides towards the inside of the double-column connecting groove 46, and the double-column connecting rod 45 and the double-column connecting groove 46 can prevent the second passive column 47 from being separated from the first passive column 43, and under the action of the gas pressure, the second passive column 47 drives the rectangular plate 53 to move towards the pin shaft body 6, the rectangular plate 53 is slidably connected inside the limiting square groove 52 of the outer frame 51 through the rail 55, plays a limiting role when the rectangular plate 53 moves, the rectangular plate 53 drives the rubber arc plate 54 to move towards the pin shaft body 6, the movement of the rectangular plate 53 drives the reset spring 49 to deform, and the reset spring 49 plays a role in resetting the rectangular plate 53, at this time, the plurality of rubber arc plates 54 simultaneously extrude the pin shaft body 6, when the rubber arc plate 54 contacts the pin shaft body 6, the gas pressure between the inside of the gas groove 42 increases, and under the action of the gas buffer, the role of buffering and shock absorption can be played, so that damage to the pin shaft body 6 during clamping can be prevented, when the rubber arc plate 54 is tightly attached to the outside of the pin shaft body 6, the connecting disc 36 is driven upwards by the electric telescopic rod 35, the connecting disc 36 drives the tooth plate 37 to move, the tooth plate 37 slides inside the machining table 32, the tooth plate 37 slides between the outer frames 51, when the top end of the tooth plate 37 engages with the rack 56, the rectangular plate 53 is locked, so that the fixed pin shaft body 6 is prevented from being separated, the device has a certain buffering effect when clamping the pin shaft body 6, the clamping force of the pin shaft body 6 is changed by the pressure of the gas, direct clamping of the pin shaft body 6 is prevented, and the pass rate of the pin shaft body 6 after processing is improved.

[0037] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A locking mechanism for a pin positioning fixture, comprising a base (1) and a support column (2), characterized in that: The base (1) is fixedly connected to a support column (2) at the top, the support column (2) is fixedly connected to an adjustment component (3) at the top, the adjustment component (3) is fixedly connected to a gas buffer component (4) at the upper end, and the gas buffer component (4) is fixedly connected to a clamping component (5) on one side. The adjustment assembly (3) includes a double ring plate (31), the inner side of which is rotatably connected to the inner side of the processing table (32), a hand handle (33) is fixedly connected to the outer side of the double ring plate (31), a slope plate (34) is fixedly connected to the inner side of the double ring plate (31), an electric telescopic rod (35) is fixedly connected to the bottom end of the processing table (32), a connecting plate (36) is fixedly connected to the bottom end of the electric telescopic rod (35), and a toothed plate (37) is fixedly connected to the top end of the connecting plate (36). The gas buffer assembly (4) includes an air cylinder (41), an air groove (42) is opened on the inner side of the air cylinder (41), the inner side of the air groove (42) is in contact with the outer side of the first rubber ring (44), and a first passive column (4) is fixedly connected to the inner side of the first rubber ring (44). 3) A double-column connecting rod (45) is slidably connected to the inner side of the double-column connecting groove (46) of the first passive column (43). A second passive column (47) is fixedly connected to one side of the double-column connecting rod (45). A second rubber ring (48) is fixedly connected to the outer side of the second passive column (47). A reset spring (49) is fixedly connected to one side of the air cylinder (41). The clamping assembly (5) includes an outer frame (51). A limit square groove (52) is opened on the inner side of the outer frame (51). A rectangular plate (53) is slidably connected to the inner side of the outer frame (51). A rubber arc plate (54) is fixedly connected to one side of the rectangular plate (53). A rail (55) is fixedly connected to the outer side of the rectangular plate (53). A rack (56) is fixedly connected to the bottom end of the rectangular plate (53).

2. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The top of the support column (2) is fixedly connected to the bottom of the processing table (32). There is a gap between the base (1) and the processing table (32). The processing table (32) is a slotted cylinder. The processing table (32) has an annular groove on the inner side near the double ring plate (31).

3. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The double ring plate (31) is shaped as a ring at both ends. The inner side of the double ring plate (31) is embedded in the groove of the processing table (32). One side of the slope plate (34) is attached to one side of the first passive column (43). The number of slope plates (34) is the same as the number of the first passive columns (43).

4. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The processing table (32) has a sliding groove on the inner side near the toothed plate (37). The toothed plate (37) slides on the inner side of the processing table (32). The toothed plate (37) is rectangular in shape. The top of the toothed plate (37) is fixedly connected with teeth. The number of toothed plates (37) is the same as the number of sliding grooves on the processing table (32).

5. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The bottom end of the air cylinder (41) is fixedly connected to the top end of the processing table (32). The air groove (42) is cylindrical in shape and penetrates the inner side of the air cylinder (41). The first passive column (43) is cylindrical in shape and the second passive column (47) is cylindrical in shape. One end of the first passive column (43) and one end of the second passive column (47) are both embedded in the inner side of the air groove (42).

6. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The outer side of the second rubber ring (48) is in contact with the inner side of the air groove (42) opened in the air cylinder (41). The shape of the double column connecting rod (45) is two cylindrical sections. The shape of the double column connecting groove (46) is two cylindrical sections. The double column connecting groove (46) passes through one end of the first passive column (43). The second passive column (47) is fixedly connected to the rectangular plate (53).

7. The locking mechanism of the pin positioning fixture according to claim 1, characterized in that: The bottom end of the outer frame (51) is fixedly connected to the top end of the processing table (32). The rectangular plate (53) is slidably connected to the inner side of the limiting square groove (52) opened in the outer frame (51) via rails (55). Rails (55) are fixed on both sides of the rectangular plate (53). The reset spring (49) is fixedly connected to the rectangular plate (53). One side of the rubber arc plate (54) is attached to the outer side of the pin body (6).

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