Clamp capable of quickly replacing expansion sleeve
By designing a fixture that quickly replaces the expansion sleeve, the push rod and connecting rod drive the expansion sleeve to move along the outer wall of the conical table, the problem of workpiece deformation caused by traditional fixtures when processing circular thin-walled workpieces is solved, achieving more uniform workpiece clamping and higher pass rate.
Patent Information
- Application Number
- CN202421769042.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When processing round thin-wall workpieces, traditional three-point fixtures can easily cause deformation at the contact surface between the workpiece and the fixture, causing damage to the workpiece, and increasing product loss rate and cost.
A clamp for quickly changing the expansion sleeve is designed. The expansion sleeve is pulled down through the connecting rod through the push rod. The expansion sleeve compresses the spring between the conical table and then falls. The expansion sleeve moves along the outer wall of the conical table and deforms as the push rod three is pressed to clamp the workpiece to achieve uniform clamping.
Improves the clamping uniformity of the workpiece, improves the pass rate, and reduces the cost caused by damage.
Smart Images
Figure CN222831652U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clamps, in particular to a clamp for quickly replacing an expansion sleeve. Background Art
[0002] In the processing industry, different workpieces need to be processed. When processing circular thin-walled products, due to the thin wall thickness of the product, when using traditional three-point fixing fixtures for fixing, it is easy to cause deformation at the contact surface between the workpiece and the fixture, resulting in damage to the workpiece, increasing the loss rate of the product and increasing costs.
[0003] A fixture is a device used to fix the workpiece in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. It is also called a fixture. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process can be called a fixture.
[0004] Some fixtures are replaced according to the size of the workpiece, but once the fixture needs to be replaced, it is relatively unchanged. Utility Model Content
[0005] The utility model aims to solve the above-mentioned problems and shortcomings and proposes a clamp for quickly replacing an expansion sleeve: starting push rod three pulls the expansion sleeve down through the connecting rod, the expansion sleeve compresses the spring between the conical platforms and then descends, the expansion sleeve moves along the outer wall of the conical platform and deforms under the pressure of push rod three, and clamps the workpiece on the surface of the expansion sleeve after deformation, thereby clamping the workpiece, improving the clamping uniformity, improving the pass rate, and reducing the cost caused by damage.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A fixture for quickly replacing an expansion sleeve comprises a base plate, a fixed structure is installed at the center of the top outer wall of the base plate, and a protective frame is installed on the top outer wall of the base plate outside the fixed structure, and adjustment components are installed on the outer walls at both ends of the top outer wall of the base plate; the fixed structure comprises a conical table, an expansion sleeve slidably connected to the top of the outer wall of the conical table, a spring installed on the top outer wall of the conical table and a stepped through hole opened on the outer wall at the center of the conical table; the adjustment component comprises a mounting seat, a column welded to the top outer wall of the mounting seat, a groove opened at the top center of the column and a push rod installed on the column in the groove.
[0008] Preferably, the other end of the spring is mounted on the inner wall of the top of the expansion sleeve, and a mounting frame is mounted on the bottom of the conical platform at the through hole, and a push rod three is installed in the mounting frame.
[0009] Preferably, a connecting rod is installed on the top outer wall of the push rod three, and one end of the push rod three and the connecting rod are both slidably connected to the outer wall of the through hole of the conical platform.
[0010] Preferably, a connecting hole is opened at the center of the top outer wall of the expansion sleeve, and a connecting screw is slidably connected in the connecting hole, and the connecting screw is threadedly connected to the center of the top end of the connecting rod.
[0011] Preferably, a sunken groove is provided on the top outer wall of the expansion sleeve at the connection hole, and one end of the connecting screw contacts the sunken groove, and the top of the connecting screw is lower than the top outer wall of the expansion sleeve.
[0012] Preferably, an adjustment seat is installed on the top outer wall of the push rod, and an adjustment slot is opened at the top center of the adjustment seat, an adjustment screw is rotatably connected in the adjustment slot, a micromotor is installed at one end of the adjustment seat, and the output shaft of the micromotor is connected to one end of the adjustment screw.
[0013] Preferably, the outer wall of the adjusting screw is threadedly connected to a mounting block, and the bottom outer wall of the mounting block is slidably connected to the top outer wall of the adjusting seat, a push rod 2 is installed on the inner wall of one end of the mounting block, and a contact head is installed at one end of the push rod 2.
[0014] Preferably, the push rod 2, the push rod 3, the push rod 1 and the micro motor are connected to a switch via a wire, and the switch is connected to a power source via a wire.
[0015] The beneficial effects of the utility model are:
[0016] 1. Place the expansion sleeve at the top of the conical table, and lower the top of the spring against the expansion sleeve. Screw the connecting screws to the connecting rod through the connecting holes to complete the installation of the expansion sleeve, which is convenient for quick replacement of different expansion sleeves and installation.
[0017] 2. Start the push rod 1, micro motor and push rod 2 at both ends of the bottom plate, start the push rod 2 to drive the contact heads to approach each other and contact the workpiece, adjust the position of the top of the workpiece expansion sleeve, so as to facilitate the adjustment of the workpiece and assist the processing;
[0018] 3. Start push rod three and pull the expansion sleeve down through the connecting rod. The expansion sleeve compresses the spring between the conical platforms and then goes down. The expansion sleeve moves along the outer wall of the conical platform and deforms under the pressure of push rod three. After deformation, the workpiece on the surface of the expansion sleeve is clamped, thereby clamping the workpiece, improving the uniformity of clamping, improving the qualified rate, and reducing the cost caused by damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the overall structure of a clamp for quickly replacing an expansion sleeve proposed by the utility model;
[0020] Figure 2 This is a schematic diagram of the unfolded structure of a clamp for quickly replacing an expansion sleeve proposed by the utility model;
[0021] Figure 3This is a schematic cross-sectional structure diagram of a clamp for quickly replacing an expansion sleeve proposed by the utility model;
[0022] Figure 4 This is a partial overall structural schematic diagram of a clamp for quickly replacing an expansion sleeve proposed by the utility model.
[0023] In the figure: 1 base plate, 2 protection frame, 3 adjustment assembly, 4 fixing structure, 5 mounting seat, 6 push rod 1, 7 adjustment seat, 8 adjustment screw, 9 micro motor, 10 mounting block, 11 push rod 2, 12 contact head, 13 conical platform, 14 through hole, 15 mounting frame, 16 push rod 3, 17 connecting rod, 18 expansion sleeve, 19 connecting screw. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0025] Embodiment 1:
[0026] Reference Figure 1 and Figure 3 A clamp for quickly replacing an expansion sleeve includes a base plate 1, a fixing structure 4 is installed at the center of the top outer wall of the base plate 1, a protective frame 2 is installed on the top outer wall of the base plate 1 outside the fixing structure 4, and adjustment components 3 are installed on the outer walls at both ends of the top outer wall of the base plate 1.
[0027] The fixing structure 4 includes a conical platform 13, an expansion sleeve 18 slidably connected to the top of the outer wall of the conical platform 13, a spring installed on the outer wall of the top of the conical platform 13, and a stepped through hole 14 opened on the outer wall at the center of the conical platform 13;
[0028] The other end of the spring is installed on the inner wall of the top of the expansion sleeve 18, and a mounting frame 15 is installed at the bottom of the conical platform 13 at the through hole 14, and a push rod 3 16 is installed in the mounting frame 15. The push rod 3 16 drives the expansion sleeve 18 to move up and down through the connecting rod 17. The expansion sleeve 18 is slidably connected to the outer wall of the conical platform 13, so that the expansion sleeve 18 is deformed as a whole to clamp the workpiece, which is convenient for fixed clamping, improves the uniformity of the force on the workpiece, avoids damage to the workpiece, and improves the qualified rate;
[0029] A connecting rod 17 is installed on the top outer wall of the push rod 3 16, and one end of the push rod 3 16 and the connecting rod 17 are both slidably connected to the outer wall of the through hole 14 of the conical platform 13, and the two ends of the connecting rod 17 are respectively connected to the expansion sleeve 18 and the push rod 3 16 through connecting screws 19, so as to facilitate the pulling of the expansion sleeve 18 to move up and down and facilitate driving and fixing;
[0030] A connection hole is provided at the center of the top outer wall of the expansion sleeve 18, and a connection screw 19 is slidably connected in the connection hole, and the connection screw 19 is screwed at the center of the top end of the connection rod 17;
[0031] The top outer wall of the expansion sleeve 18 is provided with an indented groove at the connecting hole, and one end of the connecting screw 19 is in contact with the indented groove. The top of the connecting screw 19 is lower than the top outer wall of the expansion sleeve 18. The indented groove of the top outer wall of the expansion sleeve 18 hides the connecting screw 19, making it convenient to place the workpiece on the top of the expansion sleeve 18 and ensure the flatness of the top of the expansion sleeve 18.
[0032] Embodiment 2:
[0033] Reference Figure 1 and Figure 4 The adjusting assembly 3 includes a mounting seat 5, a column welded on the top outer wall of the mounting seat 5, a groove provided at the center of the top of the column, and a push rod 6 installed in the groove of the column. The push rod 6 on the mounting seat 5 adjusts the height of the adjusting seat 7. The micro motor 9 drives the adjusting screw 8 to rotate, which is convenient for adjusting the position of the contact head 12. The push rod 11 cooperates with the contact head 12 to further push the workpiece for adjustment, which is convenient for adjusting the workpiece.
[0034] An adjustment seat 7 is installed on the top outer wall of the push rod 1 6, and an adjustment slot is opened at the top center of the adjustment seat 7, an adjustment screw 8 is rotatably connected in the adjustment slot, a micro motor 9 is installed at one end of the adjustment seat 7, and the output shaft of the micro motor 9 is connected to one end of the adjustment screw 8;
[0035] The outer wall of the adjusting screw 8 is threadedly connected with a mounting block 10, and the bottom outer wall of the mounting block 10 is slidably connected to the top outer wall of the adjusting seat 7. A push rod 11 is installed on the inner wall of one end of the mounting block 10, and a contact head 12 is installed at one end of the push rod 11. The contact head 12 adapted to the shape of the workpiece is replaced to facilitate the adjustment of the workpiece position, the lifting of the workpiece, and the use.
[0036] The push rod 2 11, the push rod 3 16, the push rod 1 6 and the micro motor 9 are connected to the switch through a wire, and the switch is connected to the power supply through a wire.
[0037] Working principle: When in use, use expansion sleeves 18 of different sizes according to workpieces of different sizes, place the expansion sleeve 18 at the top of the conical table 13, and the top of the spring pushes against the expansion sleeve 18 and then drops down. Screw the connecting screw 19 with the connecting rod 17 through the connecting hole to complete the installation of the expansion sleeve 18. Place the workpiece to be fixed on the top of the expansion sleeve 18, start the push rod 1 6, micro motor 9 and push rod 2 11 at both ends of the bottom plate 1, start the push rod 1 6 to adjust the height of the contact head 12, and adjust the front and rear position of the contact head 12 by adjusting the screw 8 after the micro motor 9 is started. At this time, start the push rod 2 11 again to drive the contact head 12 to approach each other and contact the workpiece, and adjust the position of the workpiece and the top of the expansion sleeve 18 until the bottom end of the workpiece is sleeved on the expansion sleeve. 18 outer wall part, at this time the adjustment component 3 returns to its position, the start push rod three 16 pulls the expansion sleeve 18 down through the connecting rod 17, the expansion sleeve 18 compresses the spring between the conical table 13 and then descends, the expansion sleeve 18 moves along the outer wall of the conical table 13 and deforms under the pressure of the push rod three 16, and clamps the workpiece on the surface of the expansion sleeve 18 after deformation, thereby clamping the workpiece, after the end, the push rod three 16 rises, and the expansion sleeve 18 leaves the outer wall of the conical table 13 under the action of the spring, and the deformed expansion sleeve 18 recovers, so that the workpiece can be removed from the expansion sleeve 18. When processing workpieces of different sizes, it is only necessary to remove the connecting screws 19 and replace the expansion sleeves 18 of different sizes. The surface of the conical table 13 is inclined to facilitate adaptation to various expansion sleeves 18.
[0038] The exemplary implementation of the utility model is described in detail with reference to the examples, however, it is understood by those skilled in the art that, without departing from the concept of the utility model, various modifications and alterations may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the utility model may be made without exceeding the scope of protection of the utility model, which is determined by the attached claims. The foregoing description of the specific exemplary implementation of the utility model is not intended to limit the utility model to the precise form disclosed, and it is obvious that many changes and variations can be made according to the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary implementations of the utility model and various different choices and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.
Claims
1. A clamp for quickly replacing an expansion sleeve, comprising a base plate (1), characterized in that: A fixing structure (4) is installed at the center of the top outer wall of the bottom plate (1), and a protection frame (2) is installed on the top outer wall of the bottom plate (1) outside the fixing structure (4), and adjustment components (3) are installed on the outer walls at both ends of the top outer wall of the bottom plate (1); The fixed structure (4) comprises a conical platform (13), an expansion sleeve (18) slidably connected to the top of the outer wall of the conical platform (13), a spring installed on the outer wall of the top of the conical platform (13), and a stepped through hole (14) opened on the outer wall at the center of the conical platform (13); The adjustment assembly (3) comprises a mounting seat (5), a column welded to the top outer wall of the mounting seat (5), a groove opened at the center of the top of the column, and a push rod (6) installed in the column and located in the groove.
2. A clamp for quickly replacing an expansion sleeve according to claim 1, characterized in that: The other end of the spring is mounted on the inner wall of the top of the expansion sleeve (18), and a mounting frame (15) is mounted on the bottom of the conical platform (13) at the through hole (14), and a push rod three (16) is mounted in the mounting frame (15).
3. A clamp for quickly replacing an expansion sleeve according to claim 2, characterized in that: A connecting rod (17) is installed on the top outer wall of the push rod three (16), and one end of the push rod three (16) and the connecting rod (17) are both slidably connected to the outer wall of the through hole (14) of the conical platform (13).
4. A clamp for quickly replacing an expansion sleeve according to claim 1, characterized in that: A connection hole is provided at the center of the top outer wall of the expansion sleeve (18), and a connection screw (19) is slidably connected in the connection hole. The connection screw (19) is screwed to the center of the top end of the connection rod (17).
5. The fixture for quickly replacing an expansion sleeve according to claim 1, characterized in that: The top outer wall of the expansion sleeve (18) is provided with an inner recessed groove at the connection hole, and one end of the connecting screw (19) contacts the inner recessed groove, and the top of the connecting screw (19) is lower than the top outer wall of the expansion sleeve (18).
6. A clamp for quickly replacing an expansion sleeve according to claim 1, characterized in that: An adjustment seat (7) is installed on the outer wall of the top end of the push rod (6), and an adjustment groove is opened at the top center of the adjustment seat (7), and an adjustment screw (8) is rotatably connected in the adjustment groove. A micro motor (9) is installed at one end of the adjustment seat (7), and the output shaft of the micro motor (9) is connected to one end of the adjustment screw (8).
7. A clamp for quickly replacing an expansion sleeve according to claim 6, characterized in that: The outer wall of the adjusting screw (8) is threadedly connected to a mounting block (10), and the bottom outer wall of the mounting block (10) is slidably connected to the top outer wall of the adjusting seat (7). A push rod 2 (11) is installed on the inner wall of one end of the mounting block (10), and a contact head (12) is installed at one end of the push rod 2 (11).
8. A clamp for quickly replacing an expansion sleeve according to claim 7, characterized in that: The push rod 2 (11), the push rod 3 (16), the push rod 1 (6) and the micro motor (9) are connected to a switch via a wire, and the switch is connected to a power source via a wire.