Cylindrical part centering clamp for gantry machining center

Abstract

The utility model discloses a cylindrical part centering clamp for a gantry machining center, and relates to the technical field of cylindrical part centering clamps. A plurality of fixing clamps are fixedly mounted at one end of the base; a centering clamp assembly is installed on the base in a matched mode. The centering clamp assembly comprises a first sliding rod and a second sliding rod. Movable clamps are fixedly mounted at the end parts of the first sliding rod and the second sliding rod; toothed plates are symmetrically and fixedly installed on the adjacent faces of the first sliding rod and the second sliding rod. The toothed plate between the first sliding rod and the second sliding rod is in meshed connection with the second gear; a cylindrical workpiece is placed between the corresponding fixed clamp and the movable clamp, a push plate is pushed through an electric push cylinder to move towards one end of the fixed clamp, and in the moving process of the push plate, a first movable plate and a second movable plate drive a first gear and a second gear correspondingly to achieve sliding of corresponding sliding rods along sliding rails through sliding blocks; the movable clamp at the end of the sliding rod is matched with the fixed clamp, and the workpiece is clamped and fixed.

Description

Technical Field

[0001] This utility model specifically relates to the field of cylindrical part centering fixtures, and more specifically to a cylindrical part centering fixture used in a gantry machining center. Background Technology

[0002] With the development of modern manufacturing, the precision requirements for machining mechanical parts are becoming increasingly stringent. Traditional simple clamping methods are insufficient to meet these high-precision requirements, which has spurred the continuous development of centering fixtures. The increasing automation in manufacturing necessitates that machining equipment be able to clamp parts quickly and accurately. Centering fixtures for cylindrical parts meet this need. For example, on automated machining equipment such as CNC lathes and automatic lathes, fixtures are required to automatically center and clamp cylindrical parts to achieve efficient mass production. In the automotive manufacturing industry, a large number of shaft parts (such as half shafts and crankshafts) need to be processed through automated production lines; centering fixtures can achieve rapid clamping, reduce machine tool downtime, and improve production efficiency.

[0003] Currently, when machining cylindrical workpieces, three-jaw chucks, four-jaw chucks, two-center chucks, or spring collets are typically used to effectively clamp and fix cylindrical parts. While this achieves the clamping effect, it can only clamp and fix one part at a time. This requires frequent workpiece changes during machining, resulting in intermittent machining and reduced efficiency of the machining equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a centering fixture for cylindrical parts in a gantry machining center. In this structure, a fixed fixture is installed on a base, and a movable fixture is installed at the end of a slide rod. The cylindrical workpiece is placed between the corresponding movable fixture and the fixed fixture. An electric push cylinder drives a push plate to move, which in turn drives two gears at both ends of the push plate to engage with a gear plate to drive the corresponding slide rod to slide. After one slide rod slides into place, the adjacent slide rod continues to move under the drive of the gear plate and the gear, thereby achieving effective clamping and fixing of different cylindrical workpieces and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cylindrical part centering fixture for a gantry machining center includes a base; a plurality of fixed fixtures are fixedly installed at one end of the base; a centering fixture assembly is fitted onto the base; the centering fixture assembly includes a first slide rod and a second slide rod; a movable fixture is fixedly installed at the ends of the first slide rod and the second slide rod; toothed plates are symmetrically fixedly installed on the adjacent surfaces of the first slide rod and the second slide rod; the toothed plates between the first slide rod and the second slide rod are meshed with a second gear.

[0007] The base is fixedly installed with crossbeams on both sides; one of the crossbeams is fitted and connected to the side of the first slide rod away from the toothed plate.

[0008] As a further technical solution of this utility model, the centering clamp assembly further includes a third slide rod and a fourth slide rod; the third slide rod and the fourth slide rod are configured with the same structure as the first slide rod and the second slide rod; the toothed plate between the third slide rod and the fourth slide rod meshes with the first gear.

[0009] As a further technical solution of this utility model, the bottoms of the first slide rod, the second slide rod, the third slide rod and the fourth slide rod are slidably installed on the slide rail via sliders; the bottom of the slide rail is fixedly installed on the base;

[0010] As a further technical solution of this utility model, the tops of the second gear and the first gear are movably mounted to the second movable plate and the first movable plate respectively via rotating shafts; the other ends of the second movable plate and the first movable plate are movably connected to both ends of the push plate via rotating shafts.

[0011] As a further technical solution of this utility model, the push plate is movably connected to the push rod of the electric push cylinder; the electric push cylinder is fixedly installed on the base via a mounting seat.

[0012] As a further technical solution of this utility model, the side of the fourth slide bar away from the mounting tooth plate is fitted and connected to the crossbeam on the other side of the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, a cylindrical workpiece is placed between a fixed fixture and a movable fixture. An electric pusher cylinder pushes a push plate, moving it towards one end of the fixed fixture. During this movement, a first movable plate and a second movable plate drive a first gear and a second gear, respectively, causing a corresponding slide rod to slide along a slide rail via a slider. This allows the movable fixture at the end of the slide rod to engage with the fixed fixture, thus clamping and fixing the workpiece. When clamping workpieces of the same size, the first, second, third, and fourth slide rods move synchronously. After clamping, the self-locking mechanism between the corresponding gears and gear plates ensures clamping stability. In this invention, when clamping workpieces of different sizes, the workpiece sizes at the corresponding positions of the ends of the first, second, third, and fourth slide rods decrease sequentially. During clamping, the push plate simultaneously pushes the first and second movable plates, causing the first and second movable plates to simultaneously drive the first and second gears to move. As the first and second gears move, the corresponding slide rods move synchronously. After the first slide rod drives the movable fixture to clamp and fix the workpiece, the second movable plate drives the second gear to continue moving. Through the engagement of the second gear with the toothed plate on the second slide rod, the second slide rod drives the movable fixture to continue moving, thereby clamping the workpiece corresponding to the position of the second slide rod. In this invention, after the first and second slide rods have clamped their respective workpieces, as the push plate continues to move, it tilts towards the third and fourth slide rods, causing the first movable plate to continue driving the third and fourth slide rods towards their corresponding fixed fixtures. When one of the third and fourth slide rods clamps and fixes a workpiece, the other slide rod, driven by the toothed plate and the first gear, effectively clamps and fixes another workpiece. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This utility model Figure 1 Top view.

[0017] Figure 3 This utility model Figure 1 A schematic diagram of the internal structure.

[0018] Figure 4 This utility model Figure 3 Bottom view of the structure.

[0019] Figure 5 This utility model Figure 3 Diagram showing the splitting process.

[0020] In the diagram: 1-base, 2-crossbeam, 3-fixed clamp, 4-centering clamp assembly, 40-first slide bar, 41-tooth plate, 42-moving clamp, 43-slider, 44-slide rail, 45-second slide bar, 46-third slide bar, 47-fourth slide bar, 5-first gear, 6-first movable plate, 7-push plate, 8-second movable plate, 9-electric push cylinder, 10-rotating shaft, 11-second gear, 12-mounting base. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 In this embodiment of the present invention, a cylindrical part centering fixture for a gantry machining center includes a base 1; a plurality of fixed fixtures 3 are fixedly installed at one end of the base 1; a centering fixture assembly 4 is fitted on the base 1; the centering fixture assembly 4 includes a first slide rod 40 and a second slide rod 45; a movable fixture 42 is fixedly installed at the ends of the first slide rod 40 and the second slide rod 45; toothed plates 41 are symmetrically fixedly installed on the adjacent surfaces of the first slide rod 40 and the second slide rod 45; the toothed plates 41 between the first slide rod 40 and the second slide rod 45 are meshed with a second gear 11.

[0023] The base 1 is fixedly installed with crossbeams 2 on both sides; one side of the crossbeam 2 is attached to the side of the first slide rod 40 away from the toothed plate 41.

[0024] The centering clamp assembly 4 further includes a third slide bar 46 and a fourth slide bar 47; the third slide bar 46 and the fourth slide bar 47 are configured with the same structure as the first slide bar 40 and the second slide bar 45; the toothed plate 41 between the third slide bar 46 and the fourth slide bar 47 is meshed with the first gear 5.

[0025] By adopting the above technical solution, when in use, the cylindrical workpiece is placed between the corresponding fixed clamp 3 and the movable clamp 42. The electric push cylinder 9 pushes the push plate 7, so that the push plate 7 moves towards one end of the fixed clamp 3. During the movement of the push plate 7, the first movable plate 6 and the second movable plate 8 respectively drive the first gear 5 and the second gear 11 to make the corresponding slide rod slide along the slide rail 44 through the slider 43, so that the movable clamp 42 at the end of the slide rod cooperates with the fixed clamp 3 to clamp and fix the workpiece.

[0026] The bottoms of the first slide bar 40, the second slide bar 45, the third slide bar 46 and the fourth slide bar 47 are slidably mounted to the slide rail 44 via the slider 43; the bottom of the slide rail 44 is fixedly mounted to the base 1.

[0027] In this embodiment, the tops of the second gear 11 and the first gear 5 are movably mounted to the second movable plate 8 and the first movable plate 6 respectively via a rotating shaft 10; the other ends of the second movable plate 8 and the first movable plate 6 are movably connected to both ends of the push plate 7 via a rotating shaft 10.

[0028] By adopting the above technical solution, when clamping workpieces of the same size, the first slide bar 40, the second slide bar 45, the third slide bar 46 and the fourth slide bar 47 move synchronously. After the workpiece is clamped, the clamping stability is achieved by the self-locking between the corresponding gear and the tooth plate.

[0029] Furthermore, when clamping workpieces of different sizes, as the workpiece sizes at the corresponding positions of the ends of the first slide rod 40, the second slide rod 45, the third slide rod 46, and the fourth slide rod 47 decrease sequentially, during clamping, the push plate 7 simultaneously pushes the first movable plate 6 and the second movable plate 8, thereby enabling the first movable plate 6 and the second movable plate 8 to simultaneously drive the first gear 5 and the second gear 11 to move. When the first gear 5 and the second gear 11 move, the corresponding slide rods move synchronously. After the first slide rod 40 drives the movable clamp 42 to clamp and fix the workpiece, the second movable plate 8 drives the second gear 11 to continue moving. Through the engagement of the second gear 11 with the toothed plate 41 on the second slide rod 45, the second slide rod 45 drives the movable clamp 42 to continue moving, thereby achieving the clamping of the workpiece corresponding to the position of the second slide rod 45.

[0030] In this embodiment, the push plate 7 is movably connected to the push rod of the electric push cylinder 9; the electric push cylinder 9 is fixedly installed to the base 1 via the mounting seat 12.

[0031] The side of the fourth slide bar 47 away from the mounting tooth plate 41 is fitted and connected to the crossbeam 2 on the other side of the base 1;

[0032] By adopting the above technical solution, after the first slide bar 40 and the second slide bar 45 have clamped the corresponding workpieces, when the push plate 7 continues to move, the push plate 7 tilts towards the third slide bar 46 and the fourth slide bar 47, so that the first movable plate 6 continues to drive the third slide bar 46 and the fourth slide bar 47 to move towards the corresponding fixed fixture 3. When one of the third slide bar 46 and the fourth slide bar 47 clamps and fixes the workpiece, the other slide bar can effectively clamp and fix the other workpiece under the drive of the toothed plate 41 and the first gear 5.

[0033] The working principle of this utility model is as follows: When in use, the cylindrical workpiece is placed between the corresponding fixed clamp 3 and the movable clamp 42. The push plate 7 is pushed by the electric push cylinder 9 to move the push plate 7 towards one end of the fixed clamp 3. During the movement of the push plate 7, the first movable plate 6 and the second movable plate 8 respectively drive the first gear 5 and the second gear 11 to make the corresponding slide rod slide along the slide rail 44 through the slider 43, so that the movable clamp 42 at the end of the slide rod cooperates with the fixed clamp 3 to clamp and fix the workpiece.

[0034] When clamping workpieces of the same size, the first slide bar 40, the second slide bar 45, the third slide bar 46 and the fourth slide bar 47 move synchronously. After the workpiece is clamped, the clamping stability is achieved through the self-locking between the corresponding gear and the toothed plate.

[0035] When clamping workpieces of different sizes, as the workpiece sizes at the corresponding positions of the ends of the first slide rod 40, the second slide rod 45, the third slide rod 46, and the fourth slide rod 47 decrease sequentially, the push plate 7 simultaneously pushes the first movable plate 6 and the second movable plate 8 during clamping. This causes the first movable plate 6 and the second movable plate 8 to simultaneously drive the first gear 5 and the second gear 11 to move. As the first gear 5 and the second gear 11 move, the corresponding slide rods move synchronously. After the first slide rod 40 drives the movable clamp 42 to clamp and fix the workpiece, the second movable plate 8 drives the second gear 11 to continue moving. Through the engagement of the second gear 11 with the toothed plate 41 on the second slide rod 45, the second slide rod 45 drives the movable clamp 42 to continue moving, thereby clamping the workpiece corresponding to the position of the second slide rod 45.

[0036] After the first slide bar 40 and the second slide bar 45 have clamped the corresponding workpieces, when the push plate 7 continues to move, the push plate 7 tilts towards the third slide bar 46 and the fourth slide bar 47, so that the first movable plate 6 continues to drive the third slide bar 46 and the fourth slide bar 47 to move towards the corresponding fixed fixture 3. When one of the third slide bar 46 and the fourth slide bar 47 clamps and fixes the workpiece, the other slide bar, driven by the toothed plate 41 and the first gear 5, effectively clamps and fixes the other workpiece.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylindrical part centering fixture for a gantry machining center, characterized by: Including the base (1), the base (1) one end fixedly installed with multiple fixed clamps (3), the base (1) is installed with the centering clamp assembly (4) on cooperation, the centering clamp assembly (4) includes first slide rod (40) and second slide rod (45), the first slide rod (40) and second slide rod (45) end fixedly installed with mobile clamp (42), the first slide rod (40) and second slide rod (45) adjacent face is symmetrically fixedly installed with the toothed plate (41), the toothed plate (41) between the first slide rod (40) and second slide rod (45) is engagedly connected with second gear (11). The base (1) both sides fixedly installed with crossbeam (2), one side crossbeam (2) and first slide rod (40) far from the side of toothed plate (41) bonding connection.

2. A cylindrical part centering fixture for a gantry machining center according to claim 1, characterized in that: The centering clamp assembly (4) further includes third slide rod (46) and fourth slide rod (47), the third slide rod (46) and fourth slide rod (47) are arranged with the same structure with first slide rod (40) and second slide rod (45), the toothed plate (41) between the third slide rod (46) and fourth slide rod (47) is engagedly connected with first gear (5).

3. A cylindrical part centering fixture for a gantry machining center according to claim 1, characterized in that: The first slide rod (40), second slide rod (45), third slide rod (46) and fourth slide rod (47) bottom are slidably installed with slide block (43) and slide rail (44), the slide rail (44) bottom is fixedly installed with base (1).

4. A cylindrical part centering fixture for a gantry machining center according to claim 2, characterized in that: Second gear (11) and first gear (5) top are movably installed with second movable plate (8) and first movable plate (6) through pivot (10) respectively, the second movable plate (8) and first movable plate (6) another end are movably connected with the both ends of push plate (7) through pivot (10).

5. A cylindrical part centering fixture for a gantry machining center according to claim 4, characterized in that: The push plate (7) is movably connected with the push rod of electric push cylinder (9), the electric push cylinder (9) is fixedly installed with base (1) through mounting seat (12).

6. A cylindrical part centering fixture for a gantry machining center according to claim 4, characterized in that: The fourth slide rod (47) far from the side of installation toothed plate (41) is bondedly connected with the crossbeam (2) of the other side of base (1).

Images