CN216576706U - Clamp assembly and CNC (computer numerical control) machining equipment comprising same - Google Patents
Clamp assembly and CNC (computer numerical control) machining equipment comprising same Download PDFInfo
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- CN216576706U CN216576706U CN202122844284.0U CN202122844284U CN216576706U CN 216576706 U CN216576706 U CN 216576706U CN 202122844284 U CN202122844284 U CN 202122844284U CN 216576706 U CN216576706 U CN 216576706U
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Abstract
The utility model aims to provide a clamp assembly which is simple in structure and convenient and fast to operate and can accurately control and adjust the clamping force applied to the surface of a workpiece, and CNC machining equipment comprising the clamp assembly. The equipment comprises a bearing abutting piece for bearing and abutting one side surface of a workpiece needing to be clamped and fixed, a movable supporting and ejecting module for abutting the other side surface of the workpiece to realize the effect of fixing the workpiece, wherein the movable supporting and ejecting module comprises a supporting and ejecting clamping piece for directly abutting against the surface of the workpiece, a guide connecting piece for guiding the supporting and ejecting clamping piece to be close to or far away from the workpiece, and a locking adjusting piece for driving the supporting and ejecting clamping piece to move along the extension direction of the guide connecting piece and applying a clamping acting force to the workpiece; and a control driving structure capable of limiting the clamping acting force of the supporting and clamping piece on the workpiece is further formed between the locking adjusting piece and the supporting and clamping piece.
Description
Technical Field
The utility model relates to the field of mechanical part production and processing equipment, in particular to a clamp assembly and CNC (computer numerical control) processing equipment comprising the same.
Background
When parts utilized in various mechanical devices are produced and manufactured, the parts need to be clamped and fixed and then processed, and how to optimize the clamping and fixing mode of the parts is the direction for research and development designers to research and continuously improve various device structures at present. When a workpiece needs to be clamped in various processing devices which are commonly used at present, a movably mounted supporting piece is usually adopted to directly support the outer wall surface of the workpiece and transfer clamping force to realize a clamping effect.
The practical fixture applicable to the cylindrical workpiece of the numerical control milling machine, disclosed in the patent document of the Chinese utility model with the granted bulletin number of CN207326466U, comprises a bottom plate, a first baffle, a servo motor, a screw rod, a first guide groove slider, a first V-shaped block, a second baffle, a second guide groove slider and a second V-shaped block, wherein the two ends of the bottom plate are fixedly connected with the first baffle and the second baffle; the middle part of the bottom plate is provided with a guide groove; the screw rod is located in the guide groove, two ends of the screw rod are respectively connected with the first baffle and the second baffle in a rotating mode, the servo motor is installed on the first baffle, an output shaft of the servo motor is connected with the screw rod, the screw rod is respectively in threaded connection with the first guide groove slider and the second guide groove slider, the first guide groove slider and the second guide groove slider do reverse reciprocating motion along the guide groove under the driving of the screw rod, the first guide groove slider is fixedly connected with the first V-shaped block, the second guide groove slider is fixedly connected with the second V-shaped block, the first V-shaped block and a V-shaped opening of the second V-shaped block are arranged oppositely, and a clamping portion for clamping a cylindrical workpiece is formed.
In the scheme, the equipment provides driving force for the clamping part through the servo motor, when workpieces with different sizes and shapes are clamped in the working process, the control on the size of the clamping force applied to the surface of the workpiece is difficult, and the situation that the workpiece is loosened due to insufficient clamping force or the surface of the workpiece is deformed and damaged due to overlarge clamping force easily occurs; or the structural mode for realizing the control is complex, which causes the cost of the equipment to rise.
In order to solve the problems, the utility model provides the clamp assembly which is simple in structure and convenient and fast to operate and can accurately control and adjust the clamping force applied to the surface of the workpiece, and the CNC machining equipment comprising the clamp assembly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a clamp assembly which is simple in structure and convenient and fast to operate and can accurately control and adjust the clamping force applied to the surface of a workpiece, and CNC machining equipment comprising the clamp assembly.
The technical purpose of the utility model is realized by the following technical scheme:
a fixture assembly comprises a bearing abutting piece for bearing and abutting one side surface of a workpiece to be clamped and fixed, a movable supporting and jacking module for abutting the other side surface of the workpiece to realize the effect of fixing the workpiece, wherein the movable supporting and jacking module comprises a supporting and jacking clamping piece for directly abutting against the surface of the workpiece, a guide connecting piece for guiding the supporting and jacking clamping piece to be close to or far away from the workpiece, and a locking adjusting piece for driving the supporting and jacking clamping piece to move along the extension direction of the guide connecting piece and applying a clamping acting force to the workpiece; and a control driving structure capable of limiting the clamping acting force of the supporting clamping piece acting on the workpiece is further formed between the locking adjusting piece and the supporting clamping piece.
Preferably, the supporting top clamping piece and the locking adjusting piece are both provided with through holes for the guide connecting piece to pass through; the supporting and jacking clamping piece and the locking adjusting piece are installed on the guide connecting piece, can rotate around the central axis of the guide connecting piece and can move along the extending direction of the central axis of the guide connecting piece.
Preferably, the guide link is formed with a threaded section, and the through hole formed in the abutment holder is a threaded hole corresponding to the threaded section.
Preferably, when the locking adjusting piece and the supporting and jacking clamping piece are arranged on the guide connecting piece, a first attaching end surface positioned on the lower side of the locking adjusting piece and a second attaching end surface positioned on the upper surface of the supporting and jacking clamping piece can be attached to each other; the control driving structure comprises a first abutting part formed on the first attaching end face and a second abutting part formed on the second attaching end face, and a transmission guide face is formed on the first abutting part or the second abutting part and used for realizing connection, so that the locking adjusting part can drive the supporting and jacking clamping part to rotate and move along the extending direction of the central axis of the guide connecting part; or the locking adjusting piece can be separated from the supporting top clamping piece, so that the locking adjusting piece can rotate relative to the supporting top clamping piece, and the two states are switched.
Preferably, the transmission guide surface is an inclined surface forming an included angle with the first attaching end surface or the second attaching end surface.
Preferably, the present invention further comprises an elastic connecting member for maintaining the first and second bonded end surfaces in a bonded state with each other.
Preferably, a plurality of movable crown modules are arranged around the circumferential outer side of the workpiece.
Preferably, the surface of the supporting and clamping piece, which is used for being in contact with the surface of the workpiece, is a circular arc-shaped curved surface.
The CNC machining equipment comprises the clamp assembly, a base portion used for installing the clamp assembly and a composite cutter head used for cutting a workpiece clamped by the clamp assembly.
Preferably, the present invention further includes a cover body attached to the outside to protect the same.
In summary, the utility model can achieve the following beneficial effects:
1. the clamp assembly can control the clamping acting force applied to the surface of the workpiece in the process of clamping and fixing the workpiece to be fixed, and can avoid deformation or damage of the workpiece when clamping the workpiece which is fragile in shape and structure or high in surface treatment requirement.
2. The clamp assembly comprises a supporting top clamping piece and a locking adjusting piece, wherein the supporting top clamping piece is used for directly clamping and abutting a workpiece, the locking adjusting piece is used for driving the supporting top clamping piece to rotate along a screw rod serving as a guide connecting piece, a protruding part with an inclined plane is arranged between the two parts, when the relative torque between the two parts is overlarge, the two parts are separated through the guiding of the protruding part with the inclined transmission guide surface, and the locking adjusting piece can not drive the supporting top clamping piece to rotate any more, so that the supporting top clamping piece does not have the tendency of continuously moving downwards, and the clamping force acting on the workpiece is effectively controlled.
3. The control driving structure in the clamp assembly comprises the elastic connecting piece used for pressing the locking adjusting piece to the supporting and jacking clamping piece, and the clamping force acting on the workpiece is further accurately controlled by adjusting the size and the strength of the spring serving as the elastic connecting piece.
Drawings
FIG. 1 is a schematic view of the mounting relationship of the major components of the fixture assembly of the present invention;
FIG. 2 is a schematic view of the internal cross-sectional structure of the clamp assembly of the present invention;
FIG. 3 is a schematic view of the mating relationship between the abutment clamp and the locking adjuster in the clamp assembly of the present invention;
FIG. 4 is an enlarged view of a portion of the control drive mechanism of the clamp assembly of the present invention;
fig. 5 is a schematic view of the clamp assembly of the present invention applied to clamp and fix a cylindrical workpiece.
In the figure:
1-bearing leaning piece;
2-movable supporting module;
3-supporting and clamping piece, 3 a-second joint end surface;
4-guide connecting piece;
5-locking adjusting piece, 5 a-first joint end surface;
6-control driving structure, 6 a-first abutting part, 6 b-second abutting part, 61-transmission guide surface;
7-elastic connecting piece;
8-workpiece.
Detailed Description
The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.
The scheme is realized by the following technical means:
example (b): when carrying out the centre gripping fixed to work piece 8, place work piece 8 earlier on leaning on the base platform that piece 1 was supported as the bearing, make work piece 8's lower surface and bearing support to lean on the upper surface of piece 1 to laminate mutually. A movable supporting and jacking module 2 is arranged above the workpiece 8, and the movable supporting and jacking module 2 comprises two parts, namely a supporting and jacking clamping part 3 and a locking and adjusting part 5. Specifically, the main bodies of the supporting and holding member 3 and the locking adjusting member 5 are cylindrical, and a first attaching end face 5a located at the upper end of the locking adjusting member 5 and a second attaching end face 3a located at the lower end of the supporting and holding member 3 can be abutted against each other for attaching. The movable supporting module 2 further comprises a guiding connecting piece 4 for connecting the supporting clamping piece 3 and the locking adjusting piece 5. Specifically, the guide connecting piece 4 is a screw rod with a thread formed on the surface and fixed with the external frame, and the screw rod sequentially passes through holes of the central axes of the supporting top clamping piece 3 and the locking adjusting piece 5. The radial dimension of the through hole formed in the locking adjusting piece is slightly larger than that of the screw rod, so that the locking adjusting piece can freely rotate around the central axis of the screw rod and can move along the axis square of the screw rod; the through hole formed in the supporting and clamping member 3 is a threaded hole corresponding to the threaded section on the screw, so that the supporting and clamping member 3 can synchronously move along the axial direction of the screw when being installed on the screw to rotate.
A control driving structure 6 for realizing that the locking adjusting piece 5 drives the supporting and clamping piece 3 to rotate is formed between the supporting and clamping piece 3 and the locking adjusting piece. Specifically, the control driving structure 6 includes a first abutting portion 6a formed by a downward protrusion of the first abutting end face 5a of the locking adjusting member and a second abutting portion formed by a downward protrusion of the second abutting end face 3a of the supporting and holding member 3. The lateral surface of at least one of the first abutting part 6a and the second abutting part is a transmission guide surface 61 inclined at an included angle with the horizontal plane. A compression spring is also mounted on the upper side of the locking adjusting member 5 as an elastic connecting member 7 for applying an acting force to the locking adjusting member 5 to keep the locking adjusting member attached to the supporting and clamping member 3, one end of the spring abuts against the upper surface of the locking adjusting member 5, and the other end of the spring is fixed on an external frame or abuts against an end surface fixed relative to the frame. Preferably, can also form a plurality of first butt portions 6a and the second butt portion of evenly spacing certain distance arrangement around the axis of gravity on first laminating terminal surface 5a or second laminating terminal surface 3a, the atress distributes more evenly when making the transmission effort between two parts, avoids appearing butt portion fracture or the uneven condition of wearing and tearing emergence.
When the locking adjusting piece is rotated, due to the mutual abutting action between the first abutting part 6a on the first abutting end face 5a and the second abutting part on the second abutting end face 3a of the supporting and jacking clamping piece 3, the supporting and jacking clamping piece 3 is driven to synchronously rotate and move downwards along the screw rod to be close to the workpiece 8 needing to be clamped until the workpiece 8 is tightly abutted to the surface of the workpiece. And the locking adjusting piece is continuously rotated along the same direction, so that the supporting and jacking clamping piece 3 has the tendency of continuously rotating and moving downwards, the fastening clamping force on the workpiece 8 is increased, and the locking and fixing on the workpiece 8 are completed. Because the structure of the clamp assembly is simple and does not have a clamping force sensing or feedback device, whether the clamping fixing force of the workpiece 8 is in a more ideal state cannot be determined, and the situation that the workpiece 8 is deformed due to insufficient tightening degree or excessive rotation may occur. In order to avoid the above problems, the locking adjusting part can be continuously rotated, and due to the existence of the control driving structure 6 included in the clamp mechanism, when the extrusion acting force applied to the workpiece 8 reaches a certain degree, the acting force generated on the transmission guide surface 61 can drive the locking adjusting part 5 to move upwards and separate from the supporting and jacking clamping part 3, so that the function of driving the supporting and jacking clamping part 3 to rotate to continuously extrude the workpiece 8 is not provided, the fastening acting force is limited, and the workpiece 8 is protected. Further, by controlling the inclination angle, material, and roughness of the transmission guide surface 61, more precise control of the fastening force can be achieved.
Further, when the above-described clamp assembly is practically applied to CNC processing equipment adapted to process workpieces 8 of various shapes, it is necessary to apply a continuously stable clamping force to all directional surfaces of the workpiece 8. The movable supporting and jacking modules 2 in the clamp assembly are designed into a plurality of arrangement forms surrounding the outer side of the workpiece 8, and the end surface of the lower end of the supporting and jacking clamping piece 3 for abutting against the workpiece 8 is designed into a circular arc-shaped curved surface, so that the close and stable fit between the supporting and jacking modules and the surface of the workpiece 8 is further promoted. The CNC machining equipment further comprises a base part used for installing the clamp assembly, a composite cutter head used for cutting the workpiece 8 clamped by the clamp assembly, and a cover body installed on the outer side and used for preventing cutting chips from splashing or preventing people from mistakenly contacting with the cutter head part.
While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a fixture assembly, includes and is used for bearing the bearing that supports and lean on piece (1) to the side that needs carry out the fixed work piece of centre gripping (8), supports to the another side of work piece (8) and leans on in order to realize the activity of fixing the effect to work piece (8) and props up a module (2), its characterized in that: the movable supporting and jacking module (2) comprises a supporting and jacking clamping piece (3) which is directly abutted against the surface of the workpiece (8), a guide connecting piece (4) which is used for guiding the supporting and jacking clamping piece (3) to be close to or far away from the workpiece (8), and a locking adjusting piece (5) which is used for driving the supporting and jacking clamping piece (3) to move along the extension direction of the guide connecting piece (4) and applying a clamping acting force to the workpiece (8); and a control driving structure (6) capable of limiting the clamping acting force of the supporting clamping piece (3) acting on the workpiece (8) is further formed between the locking adjusting piece (5) and the supporting clamping piece (3).
2. The clamp assembly of claim 1, wherein: the supporting and clamping piece (3) and the locking and adjusting piece are both provided with through holes for the guide connecting piece (4) to pass through; the supporting and jacking device is characterized in that the supporting and jacking clamping piece (3) and the locking adjusting piece (5) are installed on the guide connecting piece (4), the supporting and jacking clamping piece (3) and the locking adjusting piece (5) can rotate around the central axis of the guide connecting piece (4), and can also move along the extending direction of the central axis of the guide connecting piece (4).
3. The clamp assembly of claim 2, wherein: a threaded section is formed on the guide connecting piece (4), and a through hole formed on the supporting top clamping piece (3) is a threaded hole corresponding to the threaded section.
4. The clamp assembly of claim 3, wherein: when the locking adjusting piece (5) and the supporting and jacking clamping piece (3) are arranged on the guide connecting piece (4), a first attaching end surface (5 a) positioned on the lower side of the locking adjusting piece (5) and a second attaching end surface (3 a) positioned on the upper surface of the supporting and jacking clamping piece (3) can be attached to each other; the control driving structure (6) comprises a first abutting part (6 a) formed on the first abutting end face (5 a) and a second abutting part (6 b) formed on the second abutting end face (3 a), and a transmission guide surface (61) is formed on the first abutting part (6 a) or the second abutting part (6 b) and used for realizing connection, so that the locking adjusting part (5) can drive the supporting and clamping part (3) to rotate and move along the extension direction of the central axis of the guide connecting part (4); or separated, so that the locking adjusting piece (5) can rotate relative to the supporting and clamping piece (3), and the two states are switched.
5. The clamp assembly of claim 4, wherein: the transmission guide surface (61) is an inclined surface forming an included angle with the first attaching end surface (5 a) or the second attaching end surface (3 a).
6. The clamp assembly of claim 4, wherein: and the elastic connecting piece (7) is used for maintaining the mutually-jointed state between the first joint end surface (5 a) and the second joint end surface (3 a).
7. The clamp assembly of claim 1, wherein: a plurality of movable supporting and jacking modules (2) are arranged around the circumferential outer side of the workpiece (8).
8. The clamp assembly of claim 1, wherein: the surface of the supporting and clamping piece (3) which is used for being in contact with the surface of the workpiece (8) is an arc-shaped curved surface.
9. A CNC processing equipment which characterized in that: the chuck assembly of any one of claims 1 to 8, further comprising a base portion for mounting said chuck assembly and a compound tool bit for cutting a work piece (8) held by the chuck assembly.
10. The CNC machining apparatus of claim 9, wherein: also comprises a cover body which is arranged outside and plays a role of protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122844284.0U CN216576706U (en) | 2021-11-19 | 2021-11-19 | Clamp assembly and CNC (computer numerical control) machining equipment comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122844284.0U CN216576706U (en) | 2021-11-19 | 2021-11-19 | Clamp assembly and CNC (computer numerical control) machining equipment comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216576706U true CN216576706U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122844284.0U Active CN216576706U (en) | 2021-11-19 | 2021-11-19 | Clamp assembly and CNC (computer numerical control) machining equipment comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216576706U (en) |
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2021
- 2021-11-19 CN CN202122844284.0U patent/CN216576706U/en active Active
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