Workpiece placing table structure of clamp

Abstract

The utility model discloses a workpiece placing table structure of a clamp. The workpiece placing table structure comprises a base, a supporting block, two first limiting blocks, two second limiting blocks and two sets of abutting components. The limiting piece is in a workpiece taking and placing state, the workpiece is placed on the placing table, in the process, the workpiece inclines in the direction between the first side and the second side, the first side firstly enters the two limiting grooves, then the abutting part can overcome the elastic piece to be close to the second limiting block, and the workpiece can be easily placed flat. After a workpiece is placed on the placing table, the workpiece is supported by the supporting block, and the abutting part abuts against the corresponding position of the outer wall of the workpiece under the action of the elastic piece. The limiting piece is switched from the workpiece taking and placing state to the workpiece fixing state, and the freedom degree of movement and the freedom degree of rotation of the workpiece in the horizontal direction are limited. After the workpiece is machined, the limiting piece is switched from the workpiece fixing state to the workpiece taking and placing state, the abutting part can overcome the elastic piece to be close to the second limiting block, and the workpiece can be taken out conveniently.

Description

Technical Field

[0001] This utility model relates to fixtures, and more particularly to a workpiece placement platform structure for a fixture. Background Technology

[0002] Fixtures are generally used to fix and position workpieces, enabling them to be machined. A common type of fixture includes: a placement table, a pressure bar movably connected to the placement table, and a cylinder that presses / releases the pressure bar. After the workpiece is placed downwards on the placement table, its rotational and horizontal freedom of movement are restricted; typically, a locating table is designed with corresponding locating blocks based on the workpiece's shape. The cylinder presses the pressure bar down to clamp the workpiece, bending and fixing it. After machining, the cylinder presses the pressure bar down to release the workpiece, moving it upwards and removing it from the placement table. Correspondingly, to ensure the stability of the locating table's workpiece positioning, the contact between the locating block and the workpiece needs to be tight, which makes removing and placing the workpiece from the locating table inconvenient. Current locating table structures still have the problem of not being able to effectively balance stable workpiece positioning with convenient workpiece handling. Utility Model Content

[0003] This application provides a workpiece placement stage structure for a fixture, which can solve the problems mentioned in the background art.

[0004] This application provides a workpiece placement stage structure for a fixture, comprising:

[0005] The base has a horizontal mounting surface at the top;

[0006] The support block is fixedly connected to the middle position of the mounting surface;

[0007] Two first limiting blocks are fixedly connected to the two corners of the first side of the mounting plane; each has a limiting groove.

[0008] Two second limiting blocks are fixedly connected to the two corners of the second side of the mounting plane, respectively;

[0009] Two sets of clamping components are respectively set on the two second limiting blocks;

[0010] The clamping components include:

[0011] The abutting part is movably connected to the second limiting block and has the ability to move relative to the second limiting block in the direction between the first side and the second side;

[0012] The elastic element acts on the abutting part, keeping the abutting part in a first extreme position close to the support block;

[0013] The limiting component is fixedly connected to the second limiting block, and the fixed connection position can be adjusted to switch between the following two states: a fixed workpiece state where the abutment part is close to the second limiting block, and a workpiece pick-up and drop state where the restriction is lifted.

[0014] In some embodiments, the abutting part is an abutting block with an inclined or arc-shaped transition surface and an abutting surface connecting the lower edge of the transition surface; the movable connection between the abutting block and the second limiting block is a sliding connection in the direction between the first side and the second side; the elastic element is a compression spring; and the limiting element is a first stud.

[0015] In some embodiments, the elastic element is an arc-shaped spring sheet; the lower end of the spring sheet is fixedly connected to the second limiting block, and the upper end is slidably connected to the second limiting block; the abutting part is the middle part of the spring sheet; and the limiting element is a nut.

[0016] In some embodiments, the middle portion of the spring sheet has a reinforcing rib on the side near the second limiting block.

[0017] In some embodiments, the second limiting block has a groove penetrating its own bottom surface and a side surface near the support block; the groove includes: a larger first groove and a smaller second groove; the abutting block includes: a first block that engages with the first groove and a second block that extends from the second groove, with the transition surface and the abutting surface both on the second block.

[0018] In summary, this application discloses a workpiece placement platform structure for a fixture, comprising: a base, a support block, two first limiting blocks, two second limiting blocks, and two sets of abutting members. The limiting members are in a workpiece-picking / placing state. When a workpiece is placed on the placement platform, it tilts between the first and second sides. The first side first enters the two limiting grooves, and then the abutting part overcomes the elastic member to approach the second limiting block, allowing the workpiece to be placed more easily and thus positioned between the first and second limiting blocks. After the workpiece is placed on the placement platform, it is supported by the support block, and under the action of the elastic member, the abutting part abuts against the corresponding position on the outer wall of the workpiece. Adjusting the fixed connection position of the limiting members on the second limiting blocks switches the limiting members from a workpiece-picking / placing state to a workpiece-fixing state. That is, the limiting grooves of the two first limiting blocks and the abutting members of the two second limiting blocks restrict the workpiece's horizontal and rotational freedom. Combined with the fixture's pressure bar and cylinder, the workpiece is pressed downwards, allowing for machining. After the workpiece is processed, the limiting component is switched from the fixed workpiece state to the workpiece loading and unloading state. The abutting part can overcome the elastic component and approach the second limiting block, making it easier to remove the workpiece. The advantages are: it balances stable workpiece positioning with convenient workpiece loading and unloading, has a simple structure, and is easy to operate. Attached Figure Description

[0019] To better illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0020] Figure 1 These are schematic diagrams of some embodiments of this application;

[0021] Figure 2 for Figure 1 A cross-sectional view of the second limiting block and the clamping component;

[0022] Figure 3 These are schematic diagrams of other embodiments of this application;

[0023] Figure 4 for Figure 2 A cross-sectional view of the second limiting block and the clamping component.

[0024] In the picture,

[0025] 1. Base; 1a. Mounting surface;

[0026] 2. Support block;

[0027] 3. First limiting block; 3a. Limiting groove;

[0028] 4. Second limiting block; 4a. Slide groove; 4b. Insertion groove; 4c. Second stud;

[0029] 5. Clamping component; 51. Abutting part; 52. Elastic component; 53. Restricting component; 5a. Transition surface; 5b. Abutting surface; 5c. Sliding sleeve; 5d. Reinforcing rib. Specific Implementation

[0030] The following description is provided in conjunction with the accompanying drawings, which are for illustrative purposes only and not strictly to scale. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes. Unless otherwise specified, the embodiments in this application can be combined with each other.

[0031] Please see Figure 1 and Figure 3 A fixture tooling platform structure includes: a base 1, a support block 2, two first limiting blocks 3, two second limiting blocks 4, and two sets of clamping members 5.

[0032] The top of the base 1 is a horizontal mounting plane 1a. More specifically, the base 1 is composed of a base plate, two side plates, and a top plate, which are fixed together by bolts, and the top surface of the top plate is the mounting plane 1a.

[0033] The support block 2 is fixedly connected to the middle position of the mounting plane 1a. That is, when the workpiece is placed on the placement table, the top surface of the support block 2 supports the bottom surface of the workpiece. Correspondingly, the support block 2 and the mounting plane 1a can be fixedly connected by bolts. The top surface of the support block 2 has stepped holes, so that the bolt nuts can also be kept in the stepped holes and do not interfere with the support block 2's support of the workpiece.

[0034] Two first limiting blocks 3 are fixedly connected to the two corners of the first side of the mounting plane 1a. Both first limiting blocks 3 have limiting grooves 3a.

[0035] The two second limiting blocks 4 are fixedly connected to the two corners of the second side of the mounting plane 1a.

[0036] Please see Figure 2 and Figure 4 Two sets of abutting members 5 are respectively disposed on two second limiting blocks 4. The abutting member 5 includes: abutting part 51, elastic member 52, and limiting member 53.

[0037] The abutting part 51 is movably connected to the second limiting block 4. Through this movable connection, the abutting part 51 can move relative to the second limiting block 4 in the direction between the first side and the second side.

[0038] The elastic element 52 acts on the abutting part 51, keeping the abutting part 51 in a first extreme position close to the support block 2. Correspondingly, the abutting part 51 can overcome the elastic element 52 and move closer to the second limiting block 4.

[0039] The limiting member 53 is fixedly connected to the second limiting block 4, and the fixed connection position can also be adjusted. By adjusting the fixed connection position, the limiting member 53 switches between the following two states: a fixed workpiece state that restricts the abutment part 51 from approaching the second limiting block 4, and a workpiece removal and placement state that releases the restriction.

[0040] When the limiting member 53 is in the workpiece-picking / placing state, the workpiece is placed on the placement table. During this process, the workpiece is tilted in the direction between the first and second sides. The first side first enters the two limiting grooves 3a, and then the abutting part 51 overcomes the elastic member 52 to approach the second limiting block 4, making it easier to lay the workpiece flat and thus enter between the first limiting block 3 and the second limiting block 4. After the workpiece is placed on the placement table, it is supported by the support block 2. Under the action of the elastic member 52, the abutting part 51 abuts against the corresponding position of the outer wall of the workpiece. Adjusting the fixed connection position of the limiting member 53 on the second limiting block 4 switches the limiting member 53 from the workpiece-picking / placing state to the workpiece-fixing state. That is, the limiting grooves 3a of the two first limiting blocks 3 and the abutting members 5 of the two second limiting blocks 4 restrict the workpiece's freedom of movement in the horizontal direction and its freedom of rotation. Then, in conjunction with the clamping bar and cylinder of the fixture, the workpiece is pressed downward, and the workpiece can be processed. After the workpiece is processed, the limiting member 53 is switched from the fixed workpiece state to the workpiece pick-up and drop-off state. The abutting part 51 can overcome the elastic member 52 and approach the second limiting block 4, making it easier to remove the workpiece.

[0041] Please see Figure 3 and Figure 4 In some embodiments, the abutting part 51 is an abutting block. The abutting block has an inclined or arc-shaped transition surface 5a and an abutting surface 5b connecting the lower edge of the transition surface 5a. The movable connection between the abutting block and the second limiting block 4 is a sliding connection in the direction between the first side and the second side. More specifically, the second limiting block 4 has a groove 4a for sliding connection of the abutting block. The elastic element 52 is a compression spring, and the limiting element 53 is a first stud. More specifically, the abutting block has a groove for the first end of the compression spring to enter, the first stud is threaded to the second limiting block 4, partially retained in the groove 4a, and the second end of the compression spring is sleeved on the portion of the first stud in the groove 4a.

[0042] During the placement of the workpiece onto the placement table, the workpiece contacts the transition surface 5a, generating a horizontal component of the force on the abutment block. This allows the abutment block to overcome the compression spring and approach the second limiting block 4. After the workpiece is laid flat and enters between the first limiting block 3 and the second limiting block 4, the abutment surface 5b abuts against the corresponding position on the outer wall of the workpiece under the action of the compression spring. Rotating the first stud causes it to abut against the abutment block, thereby restricting the abutment block from approaching the second limiting block 4. This allows the abutment block to engage with the limiting groove 3a to limit the workpiece.

[0043] Please see Figure 4In some embodiments, the groove 4a of the second limiting block 4 penetrates the bottom surface of the second limiting block 4 and the side surface of the second limiting block 4 near the support block 2. The groove 4a includes a larger first groove and a smaller second groove; the abutting block includes a first block that engages with the first groove and a second block that extends from the second groove. The transition surface 5a and the abutting surface 5b are both on the second block.

[0044] Before the second limiting block 4 is fixedly connected to the base 1, the compression spring is first inserted into the abutment block, and then the abutment block and the compression spring are inserted into the slide groove 4a from the bottom surface of the second limiting block 4. After the second limiting block 4 and the base 1 are fixedly connected, the sliding connection between the abutment block and the second limiting block 4 is completed.

[0045] Please see Figure 1 and Figure 2 In some embodiments, the elastic element 52 is an arc-shaped spring sheet. The lower end of the spring sheet is fixedly connected to the second limiting block 4, and the upper end is slidably connected to the second limiting block 4. More specifically, both ends of the spring sheet have holes; the second limiting block 4 has an insertion groove 4b for the lower end of the spring sheet to be inserted; the second limiting block 4 is also threadedly connected to a second stud 4c; the lower end of the second stud 4c passes through the hole at the lower end of the spring sheet, and the upper end of the second stud 4c protrudes from the second limiting block 4, for the hole at the upper end of the spring sheet to be riveted and fixed to a sliding sleeve 5c, which is fitted into the protruding part of the second stud 4c. The abutting part 51 is the middle part of the spring sheet. The limiting element 53 is a nut, which is threadedly connected to the second stud 4c.

[0046] During the placement of the workpiece onto the placement table, the workpiece contacts the spring, causing the spring to overcome its own elastic deformation. Correspondingly, the abutment part 51 moves closer to the second limiting block 4, and the upper end of the spring moves upward. After the workpiece is laid flat and enters between the first limiting block 3 and the second limiting block 4, the abutment part 51 abuts against the corresponding position on the outer wall of the workpiece under the elastic action of the spring. Rotating the nut causes the nut to abut against the sliding sleeve 5c at the upper end of the spring, thereby restricting the abutment block from approaching the second limiting block 4, so that the abutment block engages with the limiting groove 3a to limit the workpiece.

[0047] Please see Figure 2 In some embodiments, the middle portion of the spring sheet has a reinforcing rib 5d on the side near the second limiting block 4.

[0048] By reinforcing rib 5d, the spring sheet, as the middle part of the abutment 51, becomes more stable and less prone to deformation.

Claims

1. A workpiece placement platform structure for a fixture, characterized in that, include: The base (1) has a horizontal mounting surface (1a) at the top; The support block (2) is fixedly connected to the middle position of the mounting plane (1a); Two first limiting blocks (3) are fixedly connected to the two corners of the first side of the mounting plane (1a); each has a limiting groove (3a); Two second limiting blocks (4) are fixedly connected to the two corners of the second side of the mounting plane (1a); Two sets of clamping components (5) are respectively set on two second limiting blocks (4); The clamping member (5) includes: The abutting part (51) is movably connected to the second limiting block (4) and has movement in the direction between the first side and the second side relative to the second limiting block (4); The elastic element (52) acts on the abutting part (51) to keep the abutting part (51) in a first extreme position close to the support block (2); The limiting member (53) is fixedly connected to the second limiting block (4) and can also adjust the fixed connection position to switch between the following two states: a fixed workpiece state in which the limiting part (51) approaches the second limiting block (4), and a workpiece removal and placement state in which the limiting is released.

2. The workpiece placement platform structure of a fixture according to claim 1, characterized in that, The abutting part (51) is an abutting block, having an inclined or arc-shaped transition surface (5a) and an abutting surface (5b) connecting the lower edge of the transition surface (5a); the movable connection between the abutting block and the second limiting block (4) is a sliding connection in the direction between the first side and the second side; the elastic element (52) is a compression spring; the limiting element (53) is a first stud.

3. The workpiece placement platform structure of a fixture according to claim 1, characterized in that, The elastic element (52) is an arc-shaped spring sheet; the lower end of the spring sheet is fixedly connected to the second limiting block (4), and the upper end is slidably connected to the second limiting block (4); the abutting part (51) is the middle part of the spring sheet; the limiting element (53) is a nut.

4. The workpiece placement platform structure of a fixture according to claim 3, characterized in that, The middle part of the spring has a reinforcing rib (5d) on the side near the second limiting block (4).

5. The workpiece placement platform structure of a fixture according to claim 2, characterized in that, The second limiting block (4) has a groove (4a) that penetrates its own bottom surface and the side near the support block (2); The slide (4a) includes a larger first groove and a smaller second groove; the abutting block includes a first block that fits into the first groove and a second block that extends from the second groove, with the transition surface (5a) and the abutting surface (5b) both located on the second block.

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