A quick-change tooling for zero-point positioning of an oil pump

Abstract

The present invention provides a quick-change tooling for zero-point positioning of an oil pump, which relates to the technical field of machining. It includes a substrate. The main body of the substrate is a rectangular plate structure, and four transverse track grooves are provided on the upper surface of the substrate; a mounting seat, and a connecting plate is respectively installed at the left and right ends of the mounting seat. In the present invention, a rubber sleeve is clamped in the groove on the outer end surface of the positioning block. Six groups of ball bearings are annularly installed on the surface of the rubber sleeve. When the positioning block is clamped inside the positioning sleeve, the two tapered surfaces of the positioning block and the positioning sleeve are in close contact. The contact points of the ball bearings undergo elastic deformation, and the ball bearings apply pressure in six directions on the circumference and move closer to the center, so that accurate positioning can be achieved on the axis, solving the problems that there are no scale marks on the surface of the processing table, the position of the mounting seat cannot be accurately determined, and when drilling different positions of the oil pump housing, the oil pump housing needs to be recalibrated, resulting in low work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and particularly relates to a quick-change zero-point positioning tooling for an oil pump. Background Art

[0002] Zero-point positioning can keep the zero point unchanged during the process of the workpiece moving from one station to another, which can save the auxiliary time for re-aligning the zero point and ensure the continuity of work. The outer shell of the oil pump has an irregular shape, and multiple through holes need to be machined on the shell surface. During the machining process of the oil pump shell, accurate positioning of the oil pump outer shell is required, but there are still some defects in the existing positioning tooling.

[0003] Referring to the patent with the reference number CN202122068999.1, a quick-change zero-point positioning tooling for an oil pump is disclosed, which includes multiple groups of detachable sub-jigs; the sub-jig includes at least one clamping assembly for clamping the oil pump shell; the clamping assembly includes a first clamping jaw, a second clamping jaw and a third clamping jaw, and the first clamping jaw, the second clamping jaw and the third clamping jaw limit three translational degrees of freedom of the oil pump shell; the first clamping jaw and the second clamping jaw are attached to the outer wall of the oil pump shell, and the third clamping jaw abuts against the oil pump shell; a first profiling block is installed between the first clamping jaw and the second clamping jaw, a second profiling block is installed between the second clamping jaw and the third clamping jaw, and a third profiling block is installed between the first clamping jaw and the third clamping jaw; the first profiling block, the second profiling block and the third profiling block respectively abut against the outer wall of the oil pump shell, and the first profiling block, the second profiling block and the third profiling block limit three rotational degrees of freedom of the oil pump shell. The utility model solves the problems of long fixture switching time, inaccurate positioning for different products, and non-reusability of the fixture body.

[0004] Based on the retrieval of the above patent and combined with the current use situation of the oil pump outer shell positioning tooling, the current oil pump outer shell positioning tooling has the following several disadvantages:

[0005] First, the surface of the processing table lacks scale markings, and it is still difficult for workers to install the mounting seat on the surface of the processing table, and the position of the mounting seat cannot be accurately determined, so the mounting seat cannot be quickly positioned;

[0006] In addition, due to the complex shape of the oil pump outer shell and the large number of through holes on the surface of the oil pump outer shell, when drilling holes at different positions of the oil pump outer shell, the oil pump outer shell needs to be re-calibrated, which not only has low work efficiency, but also the drilling position is prone to deviation. Summary of the Invention

[0007] In view of this, the present invention provides a quick-change tooling for zero-point positioning of an oil pump. The main body of the positioning block is a frustum-shaped structure, and a rubber sleeve is clamped in the groove on the outer end face of the positioning block. Six groups of ball bearings are annularly installed on the surface of the rubber sleeve. When the positioning block is clamped inside the positioning sleeve, the two conical surfaces of the positioning block and the positioning sleeve are in close contact, and the contact points of the ball bearings undergo elastic deformation. The ball bearings apply pressure in six directions on the circumference and move closer to the center, enabling accurate positioning on the axis. Through the arrangement that the sliding block is slidably clamped in the transverse track groove, workers can move the mounting seat left and right as needed. Two groups of scale lines are provided at the front and rear positions on the surface of the substrate, and workers can accurately determine the position of the mounting seat according to the numbers on the scale lines, enabling the quick installation of the mounting plate. Also, through the arrangement that the fastening screw on the upper end face of the sliding block is clamped in the mounting hole on the surface of the connecting plate, after the worker tightens the nut on the surface of the fastening screw, the mounting seat can be fixed on the upper end face of the substrate.

[0008] The present invention provides the purpose and efficacy of a quick-change tooling for zero-point positioning of an oil pump, specifically including: a substrate;

[0009] The main body of the substrate is a rectangular plate structure, and four transverse track grooves are provided on the upper surface of the substrate;

[0010] A mounting seat, with a connecting plate installed at each of the left and right ends of the mounting seat. Mounting holes are provided on the surface of the connecting plate, and a resistance groove in a cross-shaped structure is provided on the upper end face of the mounting seat;

[0011] A placement plate, with a handle installed at each of the left and right ends of the placement plate. Side baffles are installed on the left and right sides of the upper end face of the placement plate, and four positioning grooves are fixedly installed on the lower end face of the placement plate;

[0012] A connecting screw, with a hexagonal column fixedly installed at the middle position of the connecting screw;

[0013] A positioning block, the main body of the positioning block is a frustum-shaped structure, and a groove is provided on the outer end face of the positioning block.

[0014] Further, scale lines are respectively provided at the front and rear positions on the upper surface of the substrate, and a sliding block is slidably clamped inside the transverse track groove on the surface of the substrate.

[0015] Further, a fastening screw is fixedly installed at the middle position of the upper end face of the sliding block, and the fastening screw is clamped in the mounting hole on the surface of the connecting plate and fastened by a nut.

[0016] Further, four first threaded holes are provided on the surface of the mounting seat, and a second threaded hole with a T-shaped structure is provided on the surface of the placement plate. The placement plate and the mounting seat are connected by bolts.

[0017] Furthermore, four card slots are fixedly installed on the surface of the mounting base. A positioning sleeve is clamped inside the card slot. A through hole is provided inside the positioning sleeve. The upper part of the through hole is funnel-shaped, and the lower end of the through hole is a round hole. When the lower end of the positioning sleeve fits with the bottom end of the card slot, the distance between the top surface of the positioning sleeve and the top of the card slot is five millimeters.

[0018] Furthermore, a positioning pin is fixedly installed on the top surface of the positioning block. The positioning pin is clamped inside the positioning groove on the lower end surface of the placement plate.

[0019] Furthermore, a groove is provided on the outer end surface of the positioning block. A rubber sleeve is arranged inside the groove. Six groups of ball bearings are installed on the surface of the rubber sleeve. The six groups of ball bearings are arranged in an annular structure. An insertion hole is provided on the lower end surface of the positioning block.

[0020] Furthermore, connecting grooves are evenly installed on the top surface of the placement plate. Threads are provided inside the connecting grooves. A connecting screw is threadedly connected inside the connecting groove.

[0021] The present invention provides an oil pump zero-point positioning quick-change tooling, and its beneficial effects are as follows:

[0022] 1. In the present invention, through the setting that the sliding block is slidably clamped in the transverse track groove, workers can move the mounting base left and right as needed. Two groups of scale lines are provided on the front and back positions of the surface of the substrate. Workers can accurately determine the position of the mounting base according to the numbers on the scale lines, which can realize the quick installation of the mounting plate. Also, through the setting that the fastening screw on the upper end surface of the sliding block is clamped in the mounting hole on the surface of the connecting plate, after workers tighten the nut on the surface of the fastening screw, the mounting base can be fixed on the upper end surface of the substrate.

[0023] 2. Four positioning grooves are fixedly installed on the lower end surface of the placement plate. A positioning pin is fixedly installed at the middle position of the upper end surface of the positioning block. Workers can insert the positioning pin into the positioning groove. Four card slots are provided on the upper end surface of the mounting base. The positioning sleeve is clamped inside the card slot. When installing the placement plate, the positioning block can be clamped inside the positioning sleeve, thereby realizing the quick positioning of the mounting plate.

[0024] 3. Through the setting that the insertion hole is provided on the lower end surface of the positioning block, when workers insert the positioning pin into the positioning groove, they can insert the plug pin into the insertion hole, and then tap the plug pin inside the insertion hole to slowly let the positioning pin enter the positioning groove, avoiding damaging the positioning block when directly tapping the positioning block.

[0025] 4. The positioning block body has a frustum-like structure, and a rubber sleeve is clamped in the groove on the outer end face of the positioning block. Six groups of ball bearings are annularly installed on the surface of the rubber sleeve. When the positioning block is clamped inside the positioning sleeve, the two tapered surfaces of the positioning block and the positioning sleeve are in close contact, the contact points of the ball bearings undergo elastic deformation, and the ball bearings apply pressure in six directions of the circumference and move closer to the center, enabling accurate positioning on the axis.

[0026] 5. When the positioning sleeve is clamped inside the card slot, the distance between the top end face of the positioning sleeve and the top end of the card slot is 5 mm, so that when the mounting seat and the placement plate are installed together, there will be no gap between the mounting seat and the placement plate, and they can be closely fitted together. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0028] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0029] In the drawings:

[0030] Figure 1 is the schematic structural diagram of the overall device of the present invention;

[0031] Figure 2 is the exploded structural diagram of the overall device of the present invention;

[0032] Figure 3 is the schematic structural diagram of the substrate, fastening block and mounting plate of the present invention;

[0033] Figure 4 is the schematic structural diagram of the placement plate of the present invention;

[0034] Figure 5 is the schematic cross-sectional structure diagram of the positioning sleeve of the present invention;

[0035] Figure 6 is the schematic structural diagram of the positioning block and the rubber sleeve of the present invention;

[0036] Figure 7 is the schematic structural diagram of the placement plate and the mounting seat of the present invention;

[0037] Figure 8 is the front view structural diagram of the mounting seat of the present invention;

[0038] Figure 9 is the present invention Figure 8 partial enlarged structural diagram at A in.

[0039] LIST OF REFERENCE NUMERALS:

[0040] 1. Substrate; 101. Horizontal track groove; 102. Scale line; 2. Mounting seat; 201. Connecting plate; 2011. Mounting hole; 202. Resistance groove; 203. Card slot; 204. First threaded hole; 3. Placing plate; 301. Side baffle; 302. Second threaded hole; 303. Handle; 304. Connecting groove; 305. Positioning groove; 4. Connecting screw; 401. Hexagonal column; 5. Sliding block; 501. Tightening screw; 6. Positioning sleeve; 7. Positioning block; 701. Positioning pin; 702. Jack; 703. Groove; 8. Rubber sleeve; 801. Ball. Detailed implementation manners

[0041] In the following, the technical solutions of the embodiments of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention.

[0042] Embodiment 1: Please refer to Figures 1 to 9 as shown:

[0043] The present invention provides an oil pump zero-point positioning quick-change tooling, including a substrate 1;

[0044] The main body of the substrate 1 is a rectangular plate structure, and four horizontal track grooves 101 are opened on the upper end surface of the substrate 1;

[0045] A mounting seat 2, with a connecting plate 201 installed at each of the left and right ends of the mounting seat 2. Mounting holes 2011 are opened on the surface of the connecting plate 201, and a resistance groove 202 in a cross-shaped structure is opened on the upper end surface of the mounting seat 2;

[0046] A placing plate 3, with a handle 303 installed at each of the left and right ends of the placing plate 3. Through the setting of the handle 303, it is convenient for workers to pick up the placing plate 3 and facilitate the installation of the placing plate 3. Side baffles 301 are installed on the left and right sides of the upper end surface of the placing plate 3, and four positioning grooves 305 are fixedly installed on the lower end surface of the placing plate 3. Workers can snap the positioning pin 701 at the top of the positioning block 7 into the positioning groove 305, so that the positioning block 7 can be installed on the lower end surface of the placing plate 3;

[0047] A connecting screw 4, with a hexagonal column 401 fixedly installed at the middle position of the connecting screw 4. Through the setting of the hexagonal column 401, when workers rotate the connecting screw 4, there is a leverage point, which is convenient for workers to thread the connecting screw 4 into the connecting groove 304 on the surface of the placing plate 3;

[0048] A positioning block 7, the main body of the positioning block 7 is a frustum-shaped structure, and a groove 703 is opened on the outer end surface of the positioning block 7.

[0049] Among them, scale lines 102 are respectively arranged at the front and rear positions of the upper end surface of the substrate 1. A slider 5 is slidably clamped inside the transverse track groove 101 on the surface of the substrate 1. During use, the slider 5 is slidably clamped inside the transverse track groove 101. When a worker moves the slider 5, the left and right positions of the mounting seat 2 can be adjusted.

[0050] Among them, a fastening screw 501 is fixedly installed at the middle position of the upper end surface of the slider 5. The fastening screw 501 is clamped in the mounting hole 2011 on the surface of the connecting plate 201 and fastened by a nut. Four first threaded holes 204 are arranged on the surface of the mounting seat 2, and a second threaded hole 302 with a T-shaped structure is arranged on the surface of the placing plate 3. The placing plate 3 and the mounting seat 2 are connected by bolts. During use, the fastening screw 501 on the upper end surface of the slider 5 is clamped in the mounting hole 2011 on the surface of the connecting plate 201. After the worker loosens the nut on the surface of the fastening screw 501, the position of the mounting seat 2 can be moved left and right. Two groups of scale lines 102 are arranged at the front and rear positions of the surface of the substrate 1. The worker can accurately determine the position of the mounting seat 2 according to the numbers on the scale lines 102. After adjusting the position of the mounting seat 2, the nut on the surface of the fastening screw 501 can be tightened, so that the mounting seat 2 can be fixed on the upper end surface of the substrate 1. Four first threaded holes 204 are arranged on the surface of the mounting seat 2, and a second threaded hole 302 with a T-shaped structure is arranged on the surface of the placing plate 3. The worker can fix the placing plate 3 on the upper end surface of the mounting seat 2 through bolts. Moreover, the second threaded hole 302 has a T-shaped structure. When the bolt is inside the second threaded hole 302, the top of the bolt can be completely inside the second threaded hole 302, which can ensure that the upper end surface of the placing plate 3 remains horizontal.

[0051] Among them, a positioning pin 701 is fixedly installed on the top end surface of the positioning block 7. The positioning pin 701 is clamped inside the positioning groove 305 on the lower end surface of the placement plate 3. A groove 703 is formed on the outer end surface of the positioning block 7. A rubber sleeve 8 is arranged inside the groove 703. Six groups of ball bearings 801 are installed on the surface of the rubber sleeve 8. The six groups of ball bearings 801 are arranged in an annular structure. An insertion hole 702 is formed on the lower end surface of the positioning block 7. During use, four positioning grooves 305 are fixedly installed on the lower end surface of the placement plate 3. The positioning pin 701 is fixedly installed at the middle position of the upper end surface of the positioning block 7. Workers can insert the positioning pin 701 into the positioning groove 305. Since the lower end surface of the positioning block 7 is provided with the insertion hole 702, during the process of inserting the positioning pin 701 into the positioning groove 305, a bolt can be inserted into the insertion hole 702, and then the bolt inside the insertion hole 702 is tapped, so that the positioning pin 701 slowly enters the positioning groove 305, avoiding damage to the positioning block 7 when directly tapping the positioning block 7. When workers fix the placement plate 3 on the surface of the mounting seat 2, the positioning block 7 is clamped in the positioning sleeve 6 inside the clamping groove 203, which can realize the rapid positioning of the placement plate 3. The rubber sleeve 8 is clamped in the groove 703 on the outer end surface of the positioning block 7. Six groups of ball bearings 801 are annularly installed on the surface of the rubber sleeve 8. When the positioning block 7 is clamped inside the positioning sleeve 6, the two tapered surfaces of the positioning block 7 and the positioning sleeve 6 are in close contact. The contact points of the ball bearings 801 undergo elastic deformation, and the ball bearings 801 apply pressure in six directions on the circumference and move closer to the center, enabling accurate positioning on the axis.

[0052] Embodiment 2: The present invention provides an oil pump zero-point positioning quick-change tooling. On the basis of Embodiment 1, as Figures 1 - 9 shown, it further includes: a mounting seat 2. Four clamping grooves 203 are fixedly installed on the surface of the mounting seat 2. A positioning sleeve 6 is clamped inside the clamping groove 203. A through hole is formed inside the positioning sleeve 6. The upper part of the through hole is funnel-shaped, and the lower part is a round hole. When the lower end of the positioning sleeve 6 is in contact with the bottom end of the clamping groove 203, the distance between the top end surface of the positioning sleeve 6 and the top end of the clamping groove 203 is five millimeters.

[0053] By adopting the above scheme, the technical effect brought is that when the positioning sleeve 6 is clamped inside the clamping groove 203, the distance between the top end surface of the positioning sleeve 6 and the top end of the clamping groove 203 is five millimeters, so that when the mounting seat 2 and the placement plate 3 are installed together, there will be no gap between the mounting seat 2 and the placement plate 3, and they can be closely attached together.

[0054] Embodiment 3: The present invention provides an oil pump zero-point positioning quick-change tooling. On the basis of Embodiment 1, as Figures 1 - 9 shown, it further includes: a connecting screw 4. Connecting grooves 304 are evenly installed on the top end surface of the placement plate 3. Threads are formed inside the connecting grooves 304. The connecting screw 4 is threadedly connected inside the connecting grooves 304.

[0055] By adopting the above scheme, the technical effects are as follows: connecting grooves 304 are evenly installed on the upper end surface of the placement plate 3, and threads are provided inside the connecting grooves 304. When the oil pump is placed on the surface of the placement plate 3, the oil pump can be installed on the upper end of the placement plate 3 through bolts. In addition, the lower threaded end of the connecting screw 4 can be threaded inside the connecting groove 304, and the upper part of the connecting screw 4 can be clamped in the round hole on the surface of the oil pump and fastened with a nut. Through the arrangement of the connecting groove 304 and the connecting screw 4, it is convenient for workers to install the oil pump on the surface of the placement plate 3, and a hexagonal column 401 is fixedly installed at the middle position on the surface of the connecting screw 4, which is convenient for workers to rotate the connecting screw 4.

[0056] Specific usage and function of this embodiment: In the present invention, the fastening screw 501 on the upper end surface of the sliding block 5 is clamped in the mounting hole 2011 on the surface of the connecting plate 201. After the worker loosens the nut on the surface of the fastening screw 501, the position of the mounting seat 2 can be moved left and right. Two groups of scale lines 102 are provided on the front and rear positions of the surface of the substrate 1. The worker can accurately determine the position of the mounting seat 2 according to the numbers on the scale lines 102. After adjusting the position of the mounting seat 2, the nut on the surface of the fastening screw 501 can be tightened, so that the mounting seat 2 can be fixed on the upper end surface of the substrate 1. Four first threaded holes 204 are provided on the surface of the mounting seat 2, and a second threaded hole 302 with a T-shaped structure is provided on the surface of the placing plate 3. The worker can fix the placing plate 3 on the upper end surface of the mounting seat 2 through bolts. Moreover, the second threaded hole 302 is of a T-shaped structure. When the bolt is located inside the second threaded hole 302, the top of the bolt can be completely located inside the second threaded hole 302, which can ensure that the upper end surface of the placing plate 3 remains horizontal. Four positioning grooves 305 are fixedly installed on the lower end surface of the placing plate 3. A positioning pin 701 is fixedly installed at the middle position of the upper end surface of the positioning block 7. The worker can insert the positioning pin 701 into the positioning groove 305. A jack 702 is provided on the lower end surface of the positioning block 7. During the process of inserting the positioning pin 701 into the positioning groove 305, the plug can be inserted into the jack 702, and then the plug inside the jack 702 can be tapped to make the positioning pin 701 slowly enter the positioning groove 305, avoiding damage to the positioning block 7 when directly tapping the positioning block 7. When the worker fixes the placing plate 3 on the surface of the mounting seat 2, the positioning block 7 is clamped in the positioning sleeve 6 inside the card slot 203, which can realize the rapid positioning of the placing plate 3. A rubber sleeve 8 is clamped in the groove 703 on the outer end surface of the positioning block 7. Six groups of balls 801 are annularly installed on the surface of the rubber sleeve 8. When the positioning block 7 is clamped inside the positioning sleeve 6, the two tapered surfaces of the positioning block 7 and the positioning sleeve 6 are in close contact. The contact points of the balls 801 undergo elastic deformation, and the balls 801 apply pressure in six directions in the circumference and move closer to the center, which can accurately position in the axis. When the positioning sleeve 6 is clamped inside the card slot 203, the distance between the top end surface of the positioning sleeve 6 and the top end of the card slot 203 is five millimeters, so that when the mounting seat 2 and the placing plate 3 are installed together, there will be no gap between the mounting seat 2 and the placing plate 3, and they can be closely fitted together. Connecting grooves 304 are evenly installed on the upper end surface of the placing plate 3, and threads are provided inside the connecting grooves 304. When the oil pump is placed on the surface of the placing plate 3, the oil pump can be installed on the upper end of the placing plate 3 through bolts. In addition, the lower threaded end of the connecting screw 4 can be threaded inside the connecting groove 304, and the upper part of the connecting screw 4 can be clamped in the round hole on the surface of the oil pump and fastened with a nut. Through the setting of the connecting groove 304 and the connecting screw 4, it is convenient for the worker to install the oil pump on the surface of the placing plate 3. A hexagonal column 401 is fixedly installed at the middle position of the surface of the connecting screw 4.Facilitate the rotation of the connecting screw 4 by the worker.

Claims

1. A quick-change tooling for zero-point positioning of an oil pump, comprising a base plate (1) and a mounting seat (2). The main body of the base plate (1) is a rectangular plate structure, and four transverse track grooves (101) are provided on the upper surface of the base plate (1); a connecting plate (201) is installed at each of the left and right ends of the mounting seat (2), an installation hole (2011) is provided on the surface of the connecting plate (201), and a resistance groove (202) in a cross-shaped structure is provided on the upper end surface of the mounting seat (2). Characterized in that: It further includes a placement plate (3), a connecting screw (4), and a positioning block (7). A handle (303) is installed at each of the left and right ends of the placement plate (3), side baffles (301) are installed on both sides of the upper end surface of the placement plate (3), and four positioning grooves (305) are fixedly installed on the lower end surface of the placement plate (3); a hexagonal column (401) is fixedly installed at the middle position of the connecting screw (4); the main body of the positioning block (7) is a frustum-shaped structure, a groove (703) is provided on the outer end surface of the positioning block (7), scale lines (102) are provided at the front and rear positions on the upper surface of the base plate (1), a sliding block (5) is slidably clamped inside the transverse track groove (101) on the surface of the base plate (1), four first threaded holes (204) are provided on the surface of the mounting seat (2), a second threaded hole (302) with a T-shaped structure is provided on the surface of the placement plate (3), the placement plate (3) and the mounting seat (2) are connected by bolts, four card slots (203) are fixedly installed on the surface of the mounting seat (2), a positioning sleeve (6) is clamped inside the card slot (203), a through hole is provided inside the positioning sleeve (6), the upper part of the through hole is funnel-shaped, the lower end of the through hole is a round hole, when the lower end of the positioning sleeve (6) fits with the bottom end of the card slot (203), the distance between the top surface of the positioning sleeve (6) and the top of the card slot (203) is five millimeters, a positioning pin (701) is fixedly installed on the top surface of the positioning block (7), the positioning pin (701) is clamped inside the positioning groove (305) on the lower end surface of the placement plate (3), a groove (703) is provided on the outer end surface of the positioning block (7), a rubber sleeve (8) is provided inside the groove (703), six groups of ball bearings (801) are installed on the surface of the rubber sleeve (8), the six groups of ball bearings (801) are arranged in an annular structure, and a jack (702) is provided on the lower end surface of the positioning block (7).

2. The quick-change tooling for zero-point positioning of an oil pump according to claim 1, Characterized in that: A fastening screw (501) is fixedly installed at the middle position of the upper end surface of the sliding block (5), and the fastening screw (501) is clamped in the installation hole (2011) on the surface of the connecting plate (201) and fastened by a nut.

3. The quick-change tooling for zero-point positioning of an oil pump according to claim 1, Characterized in that: Connecting grooves (304) are evenly installed on the top surface of the placement plate (3), threads are provided inside the connecting grooves (304), and the connecting screw (4) is threadedly connected inside the connecting grooves (304).

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