Lathe eccentric clamp convenient to clamp

Abstract

The invention relates to the technical field of lathe fixtures, and provides a lathe eccentric fixture convenient to clamp, which comprises a sliding seat, a sliding block slidably mounted on the sliding seat, a flange fixedly mounted at the upper end of the sliding block and a three-jaw chuck fixedly mounted at the upper end of the flange, and an adjustable gauge block is arranged between one end of the sliding seat and one end of the sliding block; a locking lead screw is installed at the other end of the sliding base and the other end of the sliding block, a correcting assembly is movably installed in the middle of the sliding base, a measuring rod is installed at the upper end of the correcting assembly, the measuring rod is perpendicular to the correcting assembly, and the measuring rod is installed between any two claws of the three-claw chuck. By arranging the lathe eccentric clamp which is simple in structure and convenient to clamp, the eccentric clamp has the advantages of being rapid in clamping and disassembling, the clamping process of an eccentric workpiece is simplified, an operator can complete the eccentric machining task more easily, the eccentric distance is adjusted through vertical movement of the sliding block on the sliding base, and the eccentric machining efficiency is improved. And the eccentric clamp can greatly shorten the clamping time of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of lathe clamps, and in particular to an eccentric clamp for a lathe which is convenient for clamping. Background Art

[0002] As the requirements for the position accuracy and shape tolerance of eccentric holes of eccentric sleeve parts and eccentric shaft hole parts continue to increase, the requirements for workpiece fixtures on lathes are also getting higher and higher. The existing fixtures are too complicated in design, and too many fixtures and positioning parts are used. The assembly requirements between parts are high and difficult to meet. It takes a lot of time and manpower to replace the processed parts. In addition, in the field of mechanical processing, when using a lathe to turn eccentric parts, a three-jaw chuck or a four-jaw chuck must be used to pre-correct the center of the eccentric part. This correction operation is relatively cumbersome and difficult. Each time an eccentric part is processed, a repeated correction operation must be performed. The processing efficiency is low and it is not suitable for mass production.

[0003] Therefore, we made improvements on this and proposed an eccentric clamp for lathes which is convenient for clamping. Summary of the invention

[0004] The object of the present invention is to provide an eccentric clamp for a lathe which is convenient for clamping, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned invention objectives, the present invention provides an eccentric clamp for a lathe that is easy to clamp, comprising a slide seat, a slider slidably mounted on the slide seat, a flange fixedly mounted on the upper end of the slider, and a three-jaw chuck fixedly mounted on the upper end of the flange, an adjustable gauge block is arranged in the middle of one end of the slide seat and the slider; the adjustable gauge block comprises a telescopic block, the telescopic block comprises two E-shaped cross blocks, the outer side surface of one cross block is hinged with a first flap, a plurality of second clamping pins are slidably connected to the first flap, the outer side surface of the other cross block is hinged with a second flap, a plurality of first clamping pins are slidably connected to the second flap; a locking screw is installed at the other end of the slide seat and the slider, a correction assembly is movably installed in the middle of the slide, a measuring rod is installed at the upper end of the correction assembly, the measuring rod and the correction assembly are perpendicular to each other, and the measuring rod is installed between any two jaws of the three-jaw chuck.

[0006] As a further solution of the present invention, the slide seat includes a base, a slideway is provided on the upper end surface of the base, a fixing plate is fixedly installed at one end of the slideway, an adjustment hole is provided in the middle of the base, and a positioning hole is provided in the center of the bottom end of the adjustment hole.

[0007] As a further solution of the present invention, the sliding block includes a boss, an offset hole is opened in the middle of the boss, and the offset hole is a waist-shaped hole with the same size as the adjustment hole.

[0008] As a further solution of the present invention, the measuring rod includes a cross bar, a push groove is provided in the middle of the cross bar, a push plate is slidably installed in the middle of the push groove, a first spring is connected to the outer end of the push plate and the cross bar, the upper surface of the cross bar is provided with engraved numbers, and pointers matching the engraved numbers are provided on both sides of the push plate.

[0009] As a further solution of the present invention, the correction assembly includes a column, the bottom end of the column is provided with an annular groove, a pressure block is sleeved and installed on the annular groove, screws are rollingly connected on both sides of the pressure block, the bottom end of the screw is threadedly connected to the slide seat, a clamping sleeve is fixedly installed on the bottom end of the column, fixing pads are sleeved on both sides of the clamping sleeve, the fixing pads are fixedly connected to the slide seat, and a second spring is fixedly connected to the upper end of the fixing pad and the clamping sleeve.

[0010] As a further solution of the present invention, a positioning column is centrally installed inside the upper end of the column.

[0011] As a further solution of the present invention, the pressing block has the same height as the offset hole, and shoulders on both sides of the pressing block are provided with slopes.

[0012] As a further solution of the present invention, the telescopic block includes a first gauge block and a second gauge block which are cross-connected, and bolts are fixedly connected in the middle of the first gauge block and the second gauge block, and stud nuts are threadedly connected to the two bolts at the same time; the first flap includes a semicircular semicircular plate, and a sliding groove is opened on the annular surface of the semicircular plate.

[0013] As a further solution of the present invention, the first clamping needle includes a connecting block, which is slidably connected in the slide groove, and one outer end of the connecting block is fixedly connected to a sleeve, a screw is rotatably connected between the connecting block and the sleeve, and a shift block is threadedly connected to the screw, and a clamping block is installed on the upper end of the shifting block, and the clamping block is slidably installed inside the sleeve; the center of the second flap and the center of the first flap are respectively aligned with the center of the product workpiece and the center of the eccentric hole.

[0014] The invention provides a convenient lathe eccentric clamp, which has the following beneficial effects: 1. By setting up a lathe eccentric clamp with a simple structure and convenient clamping, which is composed of a slide seat, a slider, a locking screw, a flange, a three-jaw chuck, etc., the eccentric clamp has the characteristics of fast clamping and disassembly, which simplifies the clamping process of the eccentric workpiece and reduces the requirements for the technical level and experience of the operator, so that the operator can complete the eccentric processing task more easily, reduces the labor intensity, and uses the up and down movement of the slider on the slide seat to adjust the eccentric distance, thereby improving production efficiency. Compared with the traditional method of determining the eccentric position through multiple alignment and measurement, the use of an eccentric clamp can greatly shorten the clamping time of the workpiece.

[0015] 2. A measuring rod and a correction component are fixedly installed in the middle of the slide, and the bottom end of the correction component is telescopically installed through a second spring. When the workpiece to be processed is placed on the upper end of the fixture, the workpiece presses the measuring rod and the correction component downward, and the edge of the workpiece squeezes the push plate. As the slider slides along the slide, the workpiece is driven to deviate and the push plate is pushed to slide on the cross bar at the same time. The eccentric distance is intuitively reflected by the difference in the readings of the engraved numbers. When the workpiece is taken out, the second spring pushes the column and the pressure block to reset upward, and the pressure block is reinserted into the offset hole to move the offset hole to align it with the adjustment hole. At this time, the flange and three-jaw chuck installed on the upper end of the slider are calibrated to facilitate the processing of the new workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 2 An exploded schematic diagram of the structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 3 A structural cross-sectional view of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 4 A schematic diagram of the slide structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 5 A schematic diagram of the structure of a slider of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 6 A schematic diagram of a measuring rod structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 7 A schematic diagram of the correction component structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Figure 8 A schematic diagram of the connection between the measuring rod and the correction assembly of an eccentric clamp for a lathe that is convenient for clamping provided in the present application; Fig. 9 A schematic diagram of the structure of an adjustable gauge block of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Fig.10 A schematic diagram showing the correspondence between the adjustable gauge block of a lathe eccentric fixture for convenient clamping provided in the present application and the center of the product and the center of the eccentric hole; Fig.11 A schematic diagram of the telescopic block structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application; Fig.12 A schematic diagram of the second flap and first clamping pin installation structure of an eccentric clamp for a lathe that is convenient for clamping provided in this application.

[0018] In the figure: 1, slide seat; 11, base; 12, slideway; 13, fixing plate; 14, adjustment hole; 15, positioning hole; 2, slide block; 21, boss; 22, offset hole; 3, flange; 4, three-jaw chuck; 5, locking screw; 6, adjustable gauge block; 61, telescopic block; 611, first gauge block; 612, second gauge block; 613, bolt; 614, stud nut; 62, first flap; 63, second flap; 631, semicircular plate; 632, slide slot; 64, first clamping pin; 641, connecting block; 642, screw; 643, sleeve; 644, shifting block; 645, clamping block; 65, second clamping pin; 7, measuring rod; 71, cross bar; 72, push slot; 73, engraved number; 74, push plate; 75, first spring; 76, pointer; 8, correction assembly; 81, column; 82, positioning column; 83, annular groove; 84, clamping sleeve; 85, pressure block; 86, screw; 87, fixing pad; 88, second spring. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0020] like Figure 1-Figure 12 The present embodiment provides an eccentric clamp for a lathe that is convenient for clamping, comprising a slide 1, a slider 2 slidably mounted on the slide 1, a flange 3 fixedly mounted on the upper end of the slider 2, and a three-jaw chuck 4 fixedly mounted on the upper end of the flange 3, and an adjustable gauge block 6 is arranged between one end of the slide 1 and the slider 2; The adjustable gauge block 6 includes a telescopic block 61, which includes two E-shaped cross blocks, a first flap 62 is hingedly connected to the outer side of one cross block, and a plurality of second clamping pins 65 are slidably connected to the first flap 62, and a second flap 63 is hingedly connected to the outer side of the other cross block, and a plurality of first clamping pins 64 are slidably connected to the second flap 63; A locking screw 5 is installed at the other end of the slide 1 and the slider 2, and a correction component 8 is movably installed in the middle of the slide 1. A measuring rod 7 is installed on the upper end of the correction component 8. The measuring rod 7 and the correction component 8 are perpendicular to each other, and the measuring rod 7 is installed between any two jaws of the three-jaw chuck 4.

[0021] The slide 1 includes a base 11, a slideway 12 is provided on the upper end surface of the base 11, a fixing plate 13 is fixedly installed at one end of the slideway 12, an adjusting hole 14 is provided in the middle of the base 11, a positioning hole 15 is provided in the center of the bottom end of the adjusting hole 14, the hole of the fixing plate 13 is convenient for fixing the adjustable gauge block 6 to prevent the adjustable gauge block 6 from being thrown out by centrifugal force during the rotation of the workpiece during processing, so as to ensure the stability of the device, the positioning hole 15 and the adjusting hole 14 are used to install the correction component 8, so as to facilitate the correction component 8 to control the reset correction of the slider 2, the flange 3 and the three-jaw chuck 4, so as to facilitate the processing of other subsequent workpiece products.

[0022] The slider 2 includes a boss 21, and an offset hole 22 is opened in the middle of the boss 21. The offset hole 22 is a waist-shaped hole with the same size as the adjustment hole 14. The boss 21 is slidably installed on the slide 1, and the slider 2 is slidably limited by the adjustable gauge block 6 to control the eccentric distance of the slider 2. The locking screw 5 is threadedly connected to the slide 1 and the slider 2. The locking screw 5 is rotated to drive the slider 2 to perform high-precision sliding fine-tuning, and the eccentricity is adjusted by moving the slider 2 up and down on the slide 1, so that the operator can complete the eccentric processing task more easily, reduce labor intensity, and improve production efficiency.

[0023] The measuring rod 7 includes a cross bar 71, a push groove 72 is provided in the middle of the cross bar 71, a push plate 74 is slidably installed in the middle of the push groove 72, a first spring 75 is connected to the outer end of the push plate 74 and the cross bar 71, a scale 73 is provided on the upper surface of the cross bar 71, and pointers 76 matching the scale 73 are provided on both sides of the push plate 74. The cross bar 71 is installed at the upper end of the three-jaw chuck 4. In order to ensure that the measuring rod 7 does not tilt when the workpiece is pressed against the measuring rod 7, the measuring rod 7 can also be provided with a Y-shaped branch, wherein a branch consistent with the sliding direction of the slider 2 is provided with a sliding push plate 74 to record the edge position of the workpiece, so as to facilitate a convenient and quick comparison of whether the eccentric distance of the workpiece is accurate.

[0024] The correction component 8 includes a column 81, a ring groove 83 is formed at the bottom end of the column 81, a pressure block 85 is sleeved on the ring groove 83, screws 86 are rollingly connected on both sides of the pressure block 85, the bottom ends of the screws 86 are threadedly connected to the slide 1, a clamping sleeve 84 is fixedly installed at the bottom end of the column 81, fixed pads 87 are sleeved on both sides of the clamping sleeve 84, the fixed pad 87 is fixedly connected to the slide 1, and the upper end of the fixed pad 87 is fixedly connected to the clamping sleeve 84 with a second spring 88. The bottom of the column 81 can cooperate with the second spring 88 to move the pressure block 85 in and out of the offset hole 22 through the tightness of the thread of the screw 86, so as to correct the slider 2 and avoid the problem of insufficient elasticity of the second spring 88 for resetting.

[0025] A positioning column 82 is centrally installed inside the upper end of the column 81 . The positioning column 82 is centrally installed on the upper end of the slide 1 to facilitate center positioning.

[0026] The pressure block 85 has the same height as the offset hole 22, and the shoulders on both sides of the pressure block 85 are provided with slopes. When the pressure block 85 is inside the adjustment hole 14, the slider 2 can slide along the slide seat 1, so that the flange 3 connected and fixed to the slider 2, the three-jaw chuck 4 and the product workpiece clamped at the upper end can be adjusted for eccentricity. When the workpiece processing is completed, the pressure block 85 can reset and correct the slider 2 under the upward push of the second spring 88.

[0027] The telescopic block 61 includes a first gauge block 611 and a second gauge block 612 which are cross-connected. Bolts 613 are fixedly connected in the middle of the first gauge block 611 and the second gauge block 612. Stud nuts 614 are threadedly connected to the two bolts 613 at the same time. The first flap 62 includes a semicircular semicircular plate 631. A slide groove 632 is provided on the annular surface of the semicircular plate 631. The first clamping needle 64 includes a connecting block 641 which is slidably connected in the slide groove 632. A sleeve 643 is fixedly connected to the outer end of the connecting block 641. A screw rod 642 is rotatably connected between the connecting block 641 and the sleeve 643. A shifting block 644 is threadedly connected to the screw rod 642. A clamping block 645 is installed on the upper end of the shifting block 644. The clamping block 645 is slidably installed in the sleeve 643. The center of the second flap 63 and the center of the first flap 62 are aligned with the center of the product workpiece and the center of the eccentric hole respectively. The first gauge block 611 and the second gauge block 612 are cross-connected, the first flap 62 and the second flap 63 on both sides of the first gauge block 611 and the second gauge block 612 are opened and flattened, the lengths of the three first clamping pins 64 are adjusted according to the radius length of the workpiece, the two first clamping pins 64 at both ends of the second flap 63 and the first clamping pin 64 in the middle are clamped on the outer circumferential contour of the product workpiece at the same time, so that the middle of the outer edge of the second flap 63 is positioned on the center of the product, and similarly, the multiple second clamping pins 65 connected to the first flap 62 are used to locate the center of the inner circumference of the eccentric hole on the product workpiece, and the middle of the outer edge of the first flap 62 is positioned on the eccentric hole of the product workpiece. At this time, the overall thickness of the telescopic block 61, the first flap 62, and the second flap 63 is consistent with the eccentricity of the eccentric hole on the product workpiece, and the two bolts 613 of the first gauge block 611 and the second gauge block 612 are tightened and fixed by the double-headed nut 614 to shape the adjustable gauge block 6, and then the first flap 62 and the second flap 63 are flipped to both sides of the telescopic block 61 and placed as a whole between the fixed plate 13 and the slider 2, and the slider 2 is quickly positioned, and the eccentricity is adjusted by moving the slider 2 up and down on the slide seat 1, thereby improving production efficiency. Compared with the traditional method of determining the eccentric position by multiple alignment and measurement, the use of an eccentric clamp can greatly shorten the clamping time of the workpiece. The thickness of the adjustable gauge block 6 is customized according to the eccentricity of the eccentric hole on the product workpiece. By accurately customizing the thickness of the adjustable gauge block 6, the eccentricity is adjusted by moving the slider 2 up and down on the slide 1, thereby improving production efficiency. After the three-jaw chuck 4 clamps the product, the slider 2 can more easily complete the eccentric processing task, thereby reducing the requirements on the operator's technical level and experience and reducing labor intensity.

[0028] The pressure block 85 has the same height as the offset hole 22, and the shoulders on both sides of the pressure block 85 are provided with slopes. When the pressure block 85 is inside the adjustment hole 14, the slider 2 can slide along the slide seat 1, so that the flange 3 connected and fixed to the slider 2, the three-jaw chuck 4 and the product workpiece clamped at the upper end can be adjusted for eccentricity. When the workpiece processing is completed, the pressure block 85 can reset and correct the slider 2 under the upward push of the second spring 88.

[0029] Specifically, when the eccentric clamp for lathes which is convenient for clamping is used: the eccentric clamp for lathes which is convenient for clamping is arranged with a simple structure, which is composed of a slide seat 1, a slider 2, a locking screw rod 5, a flange 3, a three-jaw chuck 4, etc., so that the eccentric clamp has the characteristics of quick clamping and disassembly, simplifies the clamping process of the eccentric workpiece, reduces the requirements on the technical level and experience of the operator, enables the operator to complete the eccentric processing task more easily, reduces the labor intensity, and utilizes the up and down movement of the slider 2 on the slide seat 1 to realize the adjustment of the eccentric distance, thereby improving the production efficiency. Compared with the traditional method of determining the eccentric position by multiple alignment and measurement, the use of the eccentric clamp can greatly shorten the clamping time of the workpiece; by fixing the measuring rod 7 and the correction component 8 in the middle of the slide seat 1, the correction component 8 The bottom end is telescopically installed by a second spring 88. When a workpiece to be processed is placed on the upper end of the fixture, the workpiece presses the measuring rod 7 and the correction assembly 8 downward, and the edge of the workpiece squeezes the push plate 74. As the slider 2 slides along the slide seat 1 and drives the workpiece to deviate, the push plate 74 is pushed to slide on the cross bar 71 at the same time. The eccentric distance is intuitively reflected by the reading difference of the engraved number 73. When the workpiece is taken out, the second spring 88 pushes the column 81 and the pressure block 85 to reset upward, and the pressure block 85 is reinserted into the offset hole 22 to move the offset hole 22 to align it with the adjustment hole 14. At this time, the flange 3 and the three-jaw chuck 4 installed on the upper end of the slider 2 are calibrated to facilitate the processing of the new workpiece. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0030] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. An eccentric clamp for a lathe conveniently clamped, comprising a slide seat (1), a slider (2) slidably mounted on the slide seat (1), a flange (3) fixedly mounted on the upper end of the slider (2), and a three-jaw chuck (4) fixedly mounted on the upper end of the flange (3), characterized in that: An adjustable gauge block (6) is provided in the middle of one end of the slide seat (1) and the slider (2); The adjustable gauge block (6) comprises a telescopic block (61), a first flap (62) being hingedly connected to one side of the telescopic block (61), a plurality of second clamping pins (65) being slidably connected to the first flap (62), and a second flap (63) being hingedly connected to the other side of the telescopic block (61), a plurality of first clamping pins (64) being slidably connected to the second flap (63); The other ends of the slide (1) and the slider (2) are provided with locking screws (5), the middle of the slide (1) is movably provided with a correction assembly (8), the upper end of the correction assembly (8) is provided with a measuring rod (7), the measuring rod (7) and the correction assembly (8) are perpendicular to each other, and the measuring rod (7) is installed between any two jaws of the three-jaw chuck (4).

2. The eccentric clamp for lathes convenient for clamping according to claim 1, characterized in that: The slide seat (1) comprises a base (11), the upper end surface of the base (11) is provided with a slideway (12), one end of the slideway (12) is fixedly mounted with a fixing plate (13), the middle of the base (11) is provided with an adjustment hole (14), and the bottom end of the adjustment hole (14) is provided with a positioning hole (15) in the center.

3. The eccentric clamp for lathes convenient for clamping according to claim 1, characterized in that: The slider (2) comprises a boss (21), an offset hole (22) is provided in the middle of the boss (21), and the offset hole (22) is a waist-shaped hole having the same size as the adjustment hole (14).

4. The eccentric clamp for lathes convenient for clamping according to claim 1, characterized in that: The measuring rod (7) comprises a cross bar (71), a push groove (72) is provided in the middle of the cross bar (71), a push plate (74) is slidably mounted in the middle of the push groove (72), a first spring (75) is connected to the outer end of the push plate (74) and the cross bar (71), a scale number (73) is provided on the upper surface of the cross bar (71), and pointers (76) matching the scale number (73) are provided on both sides of the push plate (74).

5. The eccentric clamp for lathes convenient for clamping according to claim 3, characterized in that: The correction assembly (8) comprises a column (81), a ring groove (83) is formed at the bottom end of the column (81), a pressure block (85) is sleeved on the ring groove (83), screws (86) are rollingly connected on both sides of the pressure block (85), the bottom ends of the screws (86) are threadedly connected to the slide seat (1), a clamping sleeve (84) is fixedly installed at the bottom end of the column (81), fixed pads (87) are sleeved on both sides of the clamping sleeve (84), the fixed pads (87) are fixedly connected to the slide seat (1), and a second spring (88) is fixedly connected to the clamping sleeve (84) at the upper end of the fixed pad (87).

6. The eccentric clamp for lathes convenient for clamping according to claim 5, characterized in that: A positioning column (82) is centrally mounted inside the upper end of the column (81).

7. The eccentric clamp for lathes convenient for clamping according to claim 5, characterized in that: The pressing block (85) has the same height as the offset hole (22), and shoulders on both sides of the pressing block (85) are provided with slopes.

8. The eccentric clamp for lathes convenient for clamping according to claim 1, characterized in that: The telescopic block (61) comprises a first gauge block (611) and a second gauge block (612) which are cross-connected, wherein the first gauge block (611) and the second gauge block (612) are both fixedly connected with bolts (613) in the middle thereof, and stud nuts (614) are simultaneously threadedly connected to the two bolts (613); The first flap (62) comprises a semicircular plate (631), and a sliding groove (632) is provided on the annular surface of the semicircular plate (631).

9. The eccentric clamp for lathes convenient for clamping according to claim 1, characterized in that: The first clamping needle (64) includes a connecting block (641), the connecting block (641) is slidably connected in the slide groove (632), one end of the outer side of the connecting block (641) is fixedly connected with a sleeve (643), a screw rod (642) is rotatably connected between the connecting block (641) and the sleeve (643), a shifting block (644) is threadedly connected on the screw rod (642), a clamping block (645) is installed on the upper end of the shifting block (644), and the clamping block (645) is slidably installed inside the sleeve (643); the center of the second flap (63) and the center of the first flap (62) are respectively aligned with the center of the product workpiece and the center of the eccentric hole.

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