High-universality positioning seat for product machining

Abstract

The invention relates to a high-universality positioning seat for product machining. A high-universality positioning seat for product machining comprises a positioning seat body, a fixing seat used for being fixed to a platform is arranged on the lower side of the positioning seat body, the positioning seat body is provided with a plurality of upper extending parts extending downwards, the fixing seat is provided with a lower extending part, and the sections of the upper extending parts and the lower extending part are both annular. The lower extending part is provided with a vertically-arranged inner cavity, a movable column and a plurality of balls are arranged in the inner cavity, a matching hole communicated with the inner cavity is formed in the side wall of the lower extending part, and a matching ring extending towards the inner side in the circumferential direction is arranged on the inner wall, deviating from the end, of the upper extending part. A plurality of elastic annular protrusions extending towards the outer side in the circumferential direction are arranged on the portion, opposite to the lower side of the matching hole, of the lower extending part, and the circumferential outer walls of the elastic annular protrusions gradually extend towards the outer side in the circumferential direction from top to bottom. The positioning device has the advantages that the positioning precision of a product workpiece to be machined is higher, and the universality is higher.

Description

Technical Field

[0001] The invention relates to a positioning seat for processing products with high universality. Background Art

[0002] A Chinese patent with application number 201710528221.X discloses a universal positioning seat, including a base, a positioning groove, an assembly plate and a fixed plate. The base has a positioning groove, and a plurality of through holes are provided on the positioning groove. The base is provided with an assembly plate installed on the surrounding side of the positioning groove through an adapter plate. A group of fixed plates are symmetrically arranged on a single assembly plate, and a plurality of heat dissipation grooves are provided on a single fixed plate. Positioning holes are provided on the edge of the base.

[0003] The above scheme uses a spring to adjust the spacing between the fixed plate and the assembly plate according to the size of the workpiece to match the corresponding product workpiece, which can adapt to workpieces of different sizes and has high versatility. However, when processing the product workpiece, the positioning seat must be positioned and fixed first, so that the positioning column of the platform matches the positioning hole to avoid relative movement of the positioning seat. However, there is a gap between the positioning column and the positioning hole, so it can only be used for processing products with low precision requirements. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning seat for product processing with higher positioning accuracy and high versatility.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a positioning seat for processing highly versatile products, comprising a positioning seat body, a fixing seat for fixing to a platform is provided on the lower side of the positioning seat body, the positioning seat body has a plurality of upper extensions extending downward, the fixing seat has a lower extension corresponding to the upper extension and extending upward, the cross-sections of the upper extension and the lower extension are both annular, the lower extension has a vertically arranged inner cavity, a movable column and a plurality of spheres are provided in the inner cavity, a matching hole that is connected to the inner cavity and for the sphere to partially extend out of the lower extension is provided on the side wall of the lower extension, a matching ring extending circumferentially inward is provided at the inner wall of the upper extension deviating from the end, the lower extension has a plurality of elastic annular protrusions extending circumferentially outward relative to the lower side of the matching hole, and the circumferential outer wall of the elastic annular protrusion gradually extends circumferentially outward from top to bottom.

[0006] The positioning seat of the present invention includes a positioning seat body for clamping and positioning the product workpiece, and also includes a fixing seat fixed on the platform. When it is necessary to clamp products of different models, a positioning seat body with different clamps or different clamp positions is selected. The lower structure of the positioning seat body is consistent, so that it can cooperate with the fixing seat on the platform to achieve high-precision positioning of the positioning seat body, thereby improving the positioning accuracy of the product workpiece and facilitating high-precision processing.

[0007] When it is necessary to assemble the positioning seat body and the fixed seat, the upper extension part of the positioning seat body and the lower extension part of the fixed seat are aligned and mounted on each other, and then an external force is applied to the movable column to make the movable column rise and fall so as to push out the spherical part, and then the spherical body at the lower extension part is extended and pressed on the upper side of the matching ring of the upper extension part, and the upper end face of the fixed seat is contacted and supported with the lower end face of the upper extension part; at the same time, the elastic annular protrusion of the lower extension part of the fixed seat contacts or even abuts against the inner wall of the upper extension part, and finally the positioning and fixing of the upper extension part is realized, so that the positioning seat body with the upper extension part can be adaptively translated, thereby realizing high-precision positioning between the positioning seat body and the fixed seat.

[0008] The present invention increases the contact points and even the contact surface with the inner wall of the upper extension part by arranging an elastic annular protrusion, thereby improving the positioning and fixing effect of the upper extension part, and at the same time, the upper end surface of the fixing seat contacts the lower end surface of the upper extension part to further ensure the positioning stability of the positioning seat body. The circumferential outer wall of the elastic annular protrusion of the present invention is a conical surface, which can ensure effective contact with the upper extension part. It only needs to ensure the size of the fixing seat, the movable column and the sphere to ensure the positioning coaxial accuracy and positioning and fixing stability of the upper extension part. The elastic annular protrusion has a certain elasticity and can be made of spring steel. Even if the alignment angle between the positioning seat body and the fixing seat is poor, it can ensure the adaptive positioning between the two and reduce assembly noise.

[0009] Preferably, the movable column is equipped with a spring, and under the action of the spring, the movable column has a tendency to move toward one side axially and push the ball part out of the matching hole.

[0010] By setting a spring, the position of the movable column can be maintained during product workpiece processing, and even if there is a certain error in the height of the lower extension part or the height of the matching ring, the ball can be effectively matched with the matching ring at the same time, so as to further improve the positioning and fixing effect between the positioning seat body with the upper extension part and the fixed seat.

[0011] Preferably, the inner cavity comprises a thin section and a wide section from top to bottom, the sphere is located in the thin section, the movable column has a movable column extension portion extending circumferentially outward, the movable column extension portion is always located in the wide section, and the movable column extension portion is dynamically sealed against the inner wall of the thick section of the inner cavity, the movable column extension portion separates the thick section into a thick section upper part and a thick section lower part, the fixed seat has a first air hole and a second air hole, and the thick section upper part and the thick section lower part are respectively connected to the first air hole and the second air hole.

[0012] The present invention pushes the movable column to move by introducing high-pressure air, or overcomes the elastic force of the spring to reset the movable column. By setting the wide section and the thin section, the spring is ensured to have a sufficient size, so that a spring with greater elastic force can be used to ensure the pushing effect on the ball, and then ensure the positioning effect on the positioning seat body.

[0013] Preferably, the number of the elastic annular protrusions is at least two, and at least two elastic annular protrusions are arranged at intervals up and down.

[0014] Preferably, the movable column has an annular mating groove on its circumferential outer wall, and the mating groove surface includes a first mating section and a second mating section in sequence along the axial direction, the diameter of the first mating section gradually increases from the side close to the second mating section to the side away from the second mating section, and the diameter of the second mating section gradually increases from the side close to the first mating section to the side away from the first mating section.

[0015] Preferably, the lower extension part comprises a lower extension part one and a lower extension part two from top to bottom, the matching hole is arranged at the lower extension part one, the elastic annular protrusion is arranged at the lower extension part two, and the width of the lower extension part two is smaller than the width of the lower extension part one.

[0016] Preferably, the fixing seat comprises a base, the base has a plurality of fixing grooves opening upward, a mounting block is fixed at the opening of the fixing groove, the mounting block is provided with the lower extension, and the movable column is located in the fixing groove at a position deviating from the upper end. The mounting block can be detachably fixed on the base, and the base can be the platform itself. After the positioning seat of the present invention is used for a long time, the maintenance of the elastic annular protrusion and other components can be achieved by disassembling or replacing the mounting block.

[0017] The invention has the advantages of enabling the positioning accuracy of the workpiece to be processed to be higher and higher versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural diagram of this embodiment.

[0019] Figure 2 FIG. 4 is another structural schematic diagram of this embodiment.

[0020] Figure 3 It is a cross-sectional view of the joint between the upper extension part and the lower extension part of this embodiment.

[0021] Figure 4 It is a structural schematic diagram of the mounting block of this embodiment.

[0022] Figure 5 FIG. 4 is another structural schematic diagram of the mounting block of this embodiment. DETAILED DESCRIPTION

[0023] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0024] Depend on Figures 1 to 5As shown, this embodiment discloses a highly versatile positioning seat for product processing, including a positioning seat body 100, a fixing seat 200 for fixing to a platform is provided at the lower side of the positioning seat body 100, and a positioning structure that cooperates with each other is provided between the positioning seat body 100 and the fixing seat 200. The positioning seat body 100 of this embodiment includes a frame 101, a clamp 102 located on the upper side of the frame 101, and a positioning structure that cooperates with each other. Figure 1 and Figure 2 As shown, according to different product workpieces to be clamped, different positioning seat bodies 100 with different clamps are selected on the frame 101, so that different product workpieces can be processed at one processing station to achieve high versatility.

[0025] The frame 101 of the positioning seat body 100 has an upper extension part 1 extending downward at the four corners of the lower side. The inner wall of the upper extension part 1 deviating from the end is provided with a matching ring 11 extending circumferentially inward, and the inner edge of the upper end surface of the matching ring 11 is chamfered. The fixed seat 200 has a lower extension part 2 corresponding to the upper extension part 1 and extending upward. The cross-sections of the upper extension part 1 and the lower extension part 2 are both circular. The lower extension part 2 has an inner cavity 20 arranged vertically and opening upward. The inner cavity 20 is provided with a movable column 3 and a plurality of balls 4. The side wall of the lower extension part 2 is provided with a matching hole 21 connected with the inner cavity 20 and for the ball 4 to partially extend out of the lower extension part 2. The multiple matching holes 21 are evenly spaced in a ring shape on the lower extension part 2. Among them, the ball 4 in this embodiment is a steel ball.

[0026] The lower extension part 2 includes a lower extension part 210 and a lower extension part 220 from top to bottom. The outer diameter of the lower extension part 220 is smaller than the outer diameter of the lower extension part 210, and the inner diameter of the lower extension part 220 is the same as the inner diameter of the lower extension part 210. The matching hole 21 is arranged at the lower extension part 210. The lower extension part 220 has two elastic annular protrusions 22 spaced up and down and extending circumferentially outward, and the circumferential outer wall of the elastic annular protrusion 22 gradually extends circumferentially outward from top to bottom.

[0027] The movable column 3 is equipped with a spring (not shown in the figure). Under the action of the spring, the movable column 3 has a tendency to move downward and can push part of the ball 4 out of the matching hole. The inner cavity 20 includes a thin section and a wide section from top to bottom. The ball 4 is located in the thin section. The movable column 3 has a movable column extension 31 extending circumferentially outward, and the movable column extension 31 is always located in the wide section. The movable column extension 31 is dynamically sealed with the inner wall of the thick section of the inner cavity 20. The movable column extension 31 divides the thick section into an upper part 203 of the thick section and a lower part 204 of the thick section. The fixed seat 200 has a first air hole 205 and a second air hole 206. The upper part 203 of the thick section and the lower part 204 of the thick section are connected to the first air hole 205 and the second air hole 206 respectively. High-pressure gas is filled into the lower part 204 of the thick section through the second air hole 206, so that the movable column 3 can be lifted up, thereby releasing the lock between the upper extension part 1 and the lower extension part 2. The lower end surface of the movable column 3 has a groove 32 opening downward, and the groove 32 is coaxial with the movable column 3 .

[0028] The fixed seat 200 of this embodiment includes a base 201, and the four corners of the base 201 have upwardly open fixed grooves, which constitute a part of the inner cavity 20. A mounting block 202 is fixed at the opening of the fixed groove. The mounting block 202 is thin at the top and thick at the bottom. The lower extension 2 is arranged on the mounting block 202. The mounting block 202 is matched with a stopper structure 207 that cooperates with the notch of the fixed groove. The mounting block 202 of this embodiment is fixed to the base 201 by bolt fasteners. The spring is located between the mounting block 202 and the movable column extension 31. The mounting block 202 and the movable column extension 3 are both provided with a positioning groove 30 for positioning the end of the spring. The movable column extension 31 is located in the fixed groove, and the movable column extension 31 is dynamically sealed with the wall of the fixed groove through a sealing ring. Among them, the first air hole 205 is arranged on the mounting block 202.

Claims

1. A positioning seat for high-versatility product processing, comprising a positioning seat body, characterized in that: A fixing seat for fixing to the platform is provided on the lower side of the positioning seat body, the positioning seat body has a plurality of upper extension parts extending downward, the fixing seat has a lower extension part corresponding to the upper extension part and extending upward, the cross-sections of the upper extension part and the lower extension part are both annular, the lower extension part has a vertically arranged inner cavity, a movable column and a plurality of spheres are provided in the inner cavity, a matching hole connected to the inner cavity and for the sphere part to extend out of the lower extension part is provided on the side wall of the lower extension part, a matching ring extending circumferentially inward is provided at the inner wall of the upper extension part deviating from the end, the lower extension part has a plurality of elastic annular protrusions extending circumferentially outward relative to the lower side of the matching hole, and the circumferential outer wall of the elastic annular protrusion gradually extends circumferentially outward from top to bottom.

2. The positioning seat for high-versatility product processing according to claim 1 is characterized in that: The movable column is matched with a spring. Under the action of the spring, the movable column has a tendency to move toward one side of the axial direction and push the ball part out of the matching hole.

3. The positioning seat for high-versatility product processing according to claim 1 or 2, characterized in that: The inner cavity includes a thin section and a wide section from top to bottom, the sphere is located in the thin section, the movable column has a movable column extension portion extending circumferentially outward, the movable column extension portion is always located in the wide section, and the movable column extension portion is dynamically sealed with the inner wall of the thick section of the inner cavity, the movable column extension portion separates the thick section into a thick section upper part and a thick section lower part, the fixed seat has a first air hole and a second air hole, and the thick section upper part and the thick section lower part are respectively connected to the first air hole and the second air hole.

4. The positioning seat for high universality product processing according to claim 1, characterized in that: The number of the elastic annular protrusions is at least two, and at least two elastic annular protrusions are arranged at intervals in the upper and lower parts.

5. The positioning seat for high universality product processing according to claim 1, characterized in that: The movable column has an annular mating groove on its circumferential outer wall, and the mating groove surface includes a first mating section and a second mating section in sequence along the axial direction. The diameter of the first mating section gradually increases from the side close to the second mating section to the side away from the second mating section, and the diameter of the second mating section gradually increases from the side close to the first mating section to the side away from the first mating section.

6. The positioning seat for high universality product processing according to claim 1, characterized in that: The lower extension part includes a lower extension part one and a lower extension part two from top to bottom, the matching hole is arranged at the lower extension part one, the elastic annular protrusion is arranged at the lower extension part two, and the width of the lower extension part two is smaller than the width of the lower extension part one.

7. The positioning seat for high-versatility product processing according to claim 1, characterized in that: The fixing seat comprises a base, the base has a plurality of fixing grooves opening upwards, a mounting block is fixed at the opening of the fixing groove, the mounting block is provided with the lower extension part, and the movable column is located in the fixing groove at a position deviating from the upper end.

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