CN218904390U

CN218904390U - Positioning fixture for triangular workpiece

Info

Publication number: CN218904390U
Application number: CN202222669129.4U
Authority: CN
Inventors: 沈华刚; 朱永刚; 吕刚磊
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-04-25
Anticipated expiration: 2032-10-11

Abstract

The utility model relates to a positioning clamp for a triangular workpiece, which comprises a base, wherein a fixed seat is arranged on the base, the fixed seat is matched with a sliding seat which is transversely and slidably connected on the base, a pressing plate is hinged on the sliding seat and can carry out jacking limiting on the inclined side edge of the triangular workpiece, the positioning clamp also comprises a clamping mechanism arranged on the base, the clamping of the end face of the workpiece can be completed by utilizing two clamping plates which synchronously move in opposite directions or relatively, the workpiece is positioned at the center of the clamp, the stability of clamping the workpiece is improved, a mechanism for pressing the workpiece is additionally arranged, the clamping of the workpiece is completed when the workpiece is horizontally placed through two lower pressing plates, and the applicability of the workpiece placement position is improved.

Description

Positioning fixture for triangular workpiece

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a positioning clamp for a triangular workpiece.

Background

In the field of modern machining, when various machine tools are adopted to process workpieces, corresponding clamps are often required to be arranged according to the workpieces to be processed, and the clamp with reasonable design not only can facilitate the machining of the machine tools, but also can improve the machining precision;

the Chinese patent application CN105058124A provides a workpiece for clamping a triangular workpiece, wherein a clamping plate can be driven by a cylinder to clamp the workpiece, a pressing plate is hinged to the clamping plate and can be used for propping the inclined side edge of the triangular workpiece to complete limiting clamping of the workpiece, and when the workpiece is clamped by utilizing the workpiece structure, the workpiece is found to be in the center of a clamp, the clamping limiting of the side edge of the workpiece is not provided with an adjusting function, the clamping of workpieces with different thicknesses cannot be met, so that a clamping mechanism is not stable and reliable, and meanwhile, the mechanism for clamping the workpiece protrudes out of the structure of a collet and is easy to interfere with a cutter of a machine tool.

Disclosure of Invention

Aiming at the situation, the utility model aims to provide the positioning clamp for the triangular workpiece, which solves the problems that the existing clamping mechanism of the triangular workpiece clamp is not simple enough and is easy to interfere with a cutter of a machine tool, and the clamp is not stable and reliable enough to clamp the side edge of the workpiece.

The technical aim of the utility model is realized by the following technical scheme:

part of the utility model: the positioning clamp for the triangular workpiece comprises a bottom support and is characterized in that a fixed seat is arranged on the bottom support, a sliding seat which is transversely connected to the bottom support in a sliding mode is arranged on the side edge of the fixed seat, a top plate is longitudinally hinged to the sliding seat, a clamping mechanism arranged on the bottom support is arranged between the fixed seat and the sliding seat, and the positioning clamp further comprises a pressing mechanism arranged on the bottom support;

the clamping mechanism comprises two clamping plates which are symmetrically arranged and are in sliding connection on the bottom support, racks are arranged on the two clamping plates, gears vertically hinged to the bottom support are arranged between the racks, and any one of the clamping plates is in rolling fit with a second screw rod in threaded connection with the bottom support.

The utility model has the beneficial effects that:

1. the utility model comprises a bottom support, wherein a fixed seat is arranged on the bottom support, the fixed seat is matched with a sliding seat which is transversely and slidably connected on the bottom support, and a pressing plate is hinged on the sliding seat and can carry out jacking limiting on the inclined side edge of a triangular workpiece;

2. the clamping mechanism is arranged on the collet, can clamp the end face of the workpiece by using two clamping plates which synchronously move in opposite directions or relatively move, ensures that the workpiece is positioned at the center of the clamp, and improves the stability of clamping the workpiece;

3. the utility model is also provided with a mechanism for pressing and holding the workpiece, and the clamping of the workpiece in the horizontal placing process is completed through the two lower pressing plates, so that the applicability of the workpiece placement position is improved;

4. the mechanism for clamping the parts is simple in structure, the parts protruding out of the bottom support are optimized, and the screw rods for limiting are all sunken in the end face of the plate, so that the interference of the clamp on a machine tool cutter can be reduced as much as possible.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a perspective view of the present utility model.

Fig. 3 is a partial structural view one of the present utility model.

Fig. 4 is a partial structural view II of the present utility model.

Fig. 5 is a partial structural view three of the present utility model.

Fig. 6 is a partial structural view four of the present utility model.

In the figure, 1, a base; 2. a fixing seat; 3. a sliding seat; 4. a top block; 5. a T-shaped groove; 6. a T-shaped block; 7. a first screw; 8. a screw sleeve; 9. a spring; 10. a clamping plate; 11. a rack; 12. a gear; 13. a second screw; 14. a first compression bar; 15. a third screw; 16. a support table; 17. a second compression bar; 18. a fourth screw; 19. a fifth screw; 20. a boss.

Detailed Description

The following describes embodiments of the present utility model in further detail with reference to FIGS. 1-6.

In the implementation of the utility model, referring to fig. 1-6, the positioning fixture for the triangular workpiece comprises a base 1, a fixed seat 2 is arranged on the base 1, a sliding seat 3 transversely connected on the base 1 in a sliding way is arranged at the side edge of the fixed seat 2, two symmetrically arranged T-shaped grooves 5 are arranged on the base 1 in a preset way, a T-shaped block 6 arranged on the sliding seat 3 is in sliding fit with the T-shaped grooves 5, the sliding seat 3 can only transversely slide on the base 1 by the mutual fit of the T-shaped block 6 and the T-shaped grooves 5, a first screw rod 7 is respectively and rotatably connected with the two T-shaped grooves 5, the two preset first screw rods 7 penetrate through the T-shaped block 6 and are connected on the base 1 in a synchronous transmission way, the two first screw rods 7 are respectively and fixedly connected with belt wheels in the preset way, the two pulleys are connected through the belt, so that the two first screws 7 can synchronously rotate, two threaded sleeves 8 for driving the sliding seat 3 to slide are in threaded fit with the two first screws 7, namely, when any one of the two first screws 7 is driven to rotate, the other first screw 7 also synchronously rotates, so that the two first screws 7 can synchronously drive the threaded sleeves 8 matched with the two first screws to slide, the two threaded sleeves 8 can jointly contact with the sliding seat 3, so that the sliding seat 3 can be driven to transversely slide, a spring 9 sleeved on the first screw 7 is arranged between the sliding seat 3 and the collet 1, the condition that the sliding seat 3 can be kept in contact with the top of the two threaded sleeves 8 all the time through the spring 9 is met, and the resetting of the sliding seat 3 can be ensured, the sliding seat 3 is matched with the fixed seat 2 to enable the triangular workpiece to be vertically placed on the bottom support 1, a preset side edge for adapting to the inclination of the triangular workpiece is longitudinally hinged with the top plate 4, corresponding rotation can be achieved after the top plate 4 contacts with the side edge of the triangular workpiece, the triangular workpiece is attached to the side edge of the triangular workpiece, a torsional spring is sleeved on a hinge shaft of the top plate 4, meanwhile, when the top plate is in an initial state, the end face of the top plate 4 is guaranteed to be in a vertical state under the action of the torsional spring, in the embodiment, the top plate 4 is responsible for carrying out top contact limiting on an acute angle part of the triangular workpiece, in actual use, an upward direction of an obtuse angle section in the triangular workpiece is guaranteed, so that the triangular workpiece can be placed on the bottom support 1 more stably, when the top plate 4 is used for clamping a certain acute angle end in the triangular workpiece, the top plate 4 can rotate downwards (can be understood to be clockwise according to the figure 1), and therefore the top plate 4 can guarantee vertical limiting on the triangular workpiece, and when the triangular workpiece is clamped, the other triangular workpiece is placed on the bottom support 1 and the fixed seat 2;

the clamping mechanism comprises two clamping plates 10 which are symmetrically arranged and are in sliding connection with the bottom support 1, the two clamping plates 10 are preset to form a' shaped structure, the two clamping plates 10 can longitudinally slide, so that the triangular workpiece can be clamped, the two clamping plates 10 are preset to be provided with racks 11, and a gear 12 vertically hinged to the bottom support 1 is arranged between the two racks 11, so that the two clamping plates 10 can only perform relative or separate synchronous movement, the triangular workpiece can be positioned at the center of the bottom support 1, and the second screw 13 which is in threaded connection with the bottom support 1 is preset to be in running fit with any clamping plate 10, so that the clamping of the workpiece can be completed by driving the two clamping plates 10 to perform relative movement through the second screw 13;

the press-holding mechanism further comprises a press-holding mechanism arranged on the collet 1, the press-holding mechanism comprises a first press plate 14 vertically in sliding fit on the fixed seat 2, the press-holding mechanism is preset, the position of the first press plate 14 is located at the other side of the sliding seat 3, a third screw 15 in threaded connection on the collet 1 is in running fit on the first press plate 14, the purpose that the first press plate 14 is required to be driven down for limiting through the third screw 15 is achieved, the press-holding mechanism further comprises a supporting table 16 in transverse sliding connection on the collet 1, a second press plate 17 is vertically in sliding fit on the supporting table 16, a fourth screw 18 in threaded connection on the collet 1 is in running fit on the supporting table 17, a fifth screw 19 in threaded connection on the supporting table 16 is achieved, the purpose that the supporting table 16 can be driven to move towards the fixed seat 2 through the fifth screw 19, therefore workpieces placed on the fixed seat 2 and the supporting table 16 are clamped, a boss 20 arranged below the first press plate 14 and the second press plate 17 is achieved, namely, the supporting table 16 and the collet 1 are arranged below the second press plate 16 and the second press plate 16 are in running fit on the second press plate 16, the second press plate 17 is better than the first press plate 16 and the second press plate 16 is required to be clamped by the second press plate 17, the second press plate is achieved through the second press-holding mechanism, and the second press plate is better is achieved through the fact that the second press-holding mechanism is in running fit on the second press plate 16 and the second press plate is required to be in the lower than the boss 20 is required to be matched with the second press plate 16 and the second press plate 16.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The positioning clamp for the triangular workpiece comprises a bottom support (1), and is characterized in that a fixed seat (2) is arranged on the bottom support (1), a sliding seat (3) transversely connected to the bottom support (1) in a sliding mode is arranged on the side edge of the fixed seat (2), a top plate (4) is longitudinally hinged to the sliding seat (3), a clamping mechanism arranged on the bottom support (1) is arranged between the fixed seat (2) and the sliding seat (3), and the positioning clamp further comprises a pressing mechanism arranged on the bottom support (1);

the clamping mechanism comprises two clamping plates (10) which are symmetrically arranged and are in sliding connection on the bottom support (1), racks (11) are arranged on the two clamping plates (10), gears (12) vertically hinged on the bottom support (1) are arranged between the racks (11), and any one of the clamping plates (10) is in running fit with a second screw (13) in threaded connection with the bottom support (1).

2. The positioning fixture for the triangular workpiece according to claim 1, wherein two symmetrically arranged T-shaped grooves (5) are formed in the base (1), T-shaped blocks (6) arranged on the sliding seat (3) are in sliding fit with the T-shaped grooves (5), first screw rods (7) are respectively and rotatably connected in the two T-shaped grooves (5), the two first screw rods (7) are in synchronous transmission connection, and two screw sleeves (8) for driving the sliding seat (3) to slide are in threaded fit on the two first screw rods (7).

3. The positioning fixture for the triangular workpiece according to claim 2, wherein a spring (9) sleeved on the first screw (7) is arranged between the sliding seat (3) and the bottom bracket (1).

4. The positioning fixture for the triangular workpiece according to claim 1, wherein the pressing mechanism comprises a first pressing plate (14) vertically matched with the fixed seat (2) in a sliding mode, and a third screw rod (15) connected with the base (1) in a threaded mode is matched with the first pressing plate (14) in a rotating mode.

5. The positioning fixture for the triangular workpiece according to claim 4, wherein the pressing mechanism further comprises a supporting table (16) which is transversely connected to the collet (1) in a sliding manner, a second pressing plate (17) is vertically and slidably matched on the supporting table (16), a fourth screw (18) which is in threaded connection with the collet (1) is rotatably matched on the second pressing plate (17), and a fifth screw (19) which is in threaded connection with the collet (1) is rotatably matched on the supporting table (16).

6. The positioning fixture for a triangular workpiece according to claim 5, wherein a boss (20) is arranged below the first pressing plate (14) and the second pressing plate (17).