A surface grinder tool fixture

Abstract

The utility model relates to mechanical processing technical field and disclose a planar grinding machine frock clamp, including fixed base, positioning rotation drive part, spacing inner support clamping part, the top outer wall of fixed base is provided with processing grinding machine body, positioning rotation drive part sets up in one side outer wall of fixed base. The utility model discloses through the rectangular sliding slot on inner support support and inner support sliding block sliding fit, when the rotating disc rotates, the arc -shaped sliding slot passes through the rotating drum drive inner support sliding block and moves along the rectangular sliding slot radial, can realize the clamping of different specifications workpieces in the range of 20-150mm of inner diameter, need not to change the fixture, and the adaptation cost reduces 40%, and the connecting fixed block circumference equidistance distribution ensures that inner support sliding block moves synchronously, and workpiece center positioning deviation is less than or equal to 0.02mm, avoids the processing scrappage caused by the positioning deviation.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a tooling fixture for a surface grinder. Background Technology

[0002] When machining ring-shaped and cylindrical workpieces on a surface grinder, the clamping stability, positioning accuracy, and versatility of the tooling fixture directly determine the machining quality and efficiency. Traditional surface grinder tooling fixtures suffer from four major problems, severely restricting the level of machining:

[0003] Poor versatility and high adaptation costs: Traditional fixtures are mostly customized structures that can only hold workpieces of a single specification (such as a fixed inner diameter of 50mm). When changing to workpieces with different inner diameters (such as 30mm or 80mm), the entire fixture needs to be disassembled and replaced. Each replacement takes 30-60 minutes, and multiple sets of fixtures need to be stocked, increasing equipment investment costs by more than 40%, making it difficult to adapt to multi-variety, small-batch production.

[0004] Rigid clamping method, easy to damage the workpiece: Traditional clamps mostly use metal hard claws to directly clamp the inner wall of the workpiece without a buffer structure. When the clamping force is too large, it is easy to leave indentations on the workpiece surface (indentation depth exceeds 0.02mm). Especially for precision workpieces with surface roughness requirements Ra≤0.8μm, subsequent polishing is required (taking 5-10 minutes / piece). If the clamping force is too small, the workpiece will slide during processing, resulting in machining dimensional deviation (exceeding ±0.05mm), and the scrap rate exceeds 8%.

[0005] Low positioning accuracy and poor machining uniformity: Traditional fixtures lack precise drive and limit structures, and workpiece positioning relies on manual visual alignment, with a center deviation exceeding 0.1mm; when machining the circumferential surface, the workpiece needs to be manually rotated, with uneven rotation speed (fluctuation ±5r / min), resulting in inconsistent grinding amount and workpiece roundness error exceeding 0.03mm, which cannot meet the machining requirements of high-precision workpieces (such as bearing rings with a roundness requirement of ±0.005mm).

[0006] Low level of automation and high labor intensity: Traditional clamps require manual tightening of bolts to achieve clamping, and each clamping takes 10-15 minutes per piece; during the processing, the position of the workpiece needs to be adjusted manually in real time, and each person can only complete the processing of 4-6 workpieces per hour, which is labor-intensive and difficult to adapt to the pace of large-scale production.

[0007] Therefore, there is an urgent need for a surface grinder tooling fixture that is "highly versatile, flexible in clamping, precise in positioning, and highly automated" to solve the above-mentioned technical problems. Utility Model Content

[0008] The purpose of this utility model is to provide a tooling fixture for a surface grinder, which solves the above-mentioned technical problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a surface grinder tooling fixture, comprising a fixed base, a positioning and rotating drive unit, and a limiting inner support clamping unit. The top outer wall of the fixed base is provided with a grinding machine body, the positioning and rotating drive unit is provided on one side of the outer wall of the fixed base, and the limiting inner support clamping unit is provided on the other side of the outer wall of the fixed base.

[0010] Preferably, the positioning and rotation drive unit specifically includes: a motor mounting bracket, disposed on one outer wall of the fixed base; a rotation limiting block, disposed on the other outer wall of the fixed base; and a drive motor, fixedly installed inside the motor mounting bracket.

[0011] A drive motor is installed to provide power to the entire fixture system, causing the rotating rod to rotate, which in turn drives the rotating disk to rotate. This achieves automated control of the rotational movements required during workpiece processing, eliminating the need for manual operation, improving work efficiency, and reducing labor costs and labor intensity.

[0012] Preferably, the motor mounting bracket is fixedly installed on one side of the outer wall of the fixed base, and a rotating rod is fixedly connected to the output end of the drive motor.

[0013] Preferably, the other end of the rotating rod movably passes through one outer wall of the fixed base and extends to the other outer wall of the fixed base. The other end of the rotating rod is fixedly connected to a rotating disk. The rotating disk has arc-shaped sliding grooves equidistantly formed around its circumference. The rotating limiting fixing block is equidistantly fixedly installed on the other outer wall of the fixed base. Each rotating limiting fixing block has a limiting sliding groove inside. The rotating disk is slidably connected to the limiting sliding groove.

[0014] A rotating disk is provided, and the arc-shaped groove design of the rotating disk and the linkage structure of the inner support slider allow multiple inner support clamping blocks to expand or contract outward synchronously with the rotation of the rotating disk. This radially symmetrical clamping method can apply pressure evenly, ensuring that the workpiece is subjected to balanced force during processing and avoiding deformation or damage caused by local stress concentration.

[0015] Preferably, the limiting inner support clamping part specifically includes: a connecting fixing block, which is circumferentially and equidistantly fixedly installed on the outer wall of the other side of the fixing base; an inner support bracket, which is fixedly installed on the outer wall of the connecting fixing block; and a rectangular sliding groove, which is circumferentially and equidistantly opened on the outer wall of the inner support bracket.

[0016] Preferably, the inner wall of the rectangular slide groove is provided with a sliding opening, and an inner support slider is slidably connected inside the rectangular slide groove. A fixing rod is fixedly installed on one outer wall of the inner support slider, and the other end of the fixing rod extends into the interior of the arc-shaped slide groove through the sliding opening. A limit block is fixedly installed on the other end of the fixing rod.

[0017] An internal support slider is provided, which, in conjunction with related components, enables the positioning of the workpiece. By cooperating with the arc-shaped slide groove of the rotating disk and the rectangular slide groove on the internal support bracket, the internal support slider can move along a predetermined trajectory and position, ensuring that the workpiece is in the correct machining position during machining and grinding, thereby improving machining accuracy. Multiple internal support sliders are equidistantly distributed around the circumference, which can apply pressure evenly from the inside when clamping the workpiece, so that the workpiece is subjected to balanced force in all directions. This can prevent the workpiece from deforming due to excessive local force, ensuring the original shape and dimensional accuracy of the workpiece and improving product quality.

[0018] Preferably, the limiting circular block is disposed on the outer wall of the rotating disk, the outer wall of the fixing rod is movably sleeved with a rotating roller, the rotating roller slides on the inner wall of the sliding passage, the rotating roller is adapted to the arc-shaped sliding groove, the rotating roller slides inside the arc-shaped sliding groove, and an inner support clamping block is fixedly installed on the outer wall of the other side of the inner support slider.

[0019] Preferably, each of the inner support clamping blocks is provided with a sliding groove, and a rubber sliding block is slidably connected inside the sliding groove. The outer wall of the rubber sliding block is provided with a textured groove. A sliding rod is fixedly connected to the other outer wall of the rubber sliding block. The other end of the sliding rod movably passes through the inner wall of the sliding groove and extends to the outer wall of the inner support clamping block. A limit block is fixedly installed at the other end of the sliding rod. A spring is movably sleeved on the outer wall of the sliding rod. One end of the spring is fixedly connected to the outer wall of the rubber sliding block, and the other end of the spring is fixedly connected to the inner wall of the sliding groove.

[0020] This utility model provides a tooling fixture for a surface grinder. It has the following beneficial effects:

[0021] 1. This utility model, through the integrated design of the positioning and rotating drive unit, allows the drive motor on the motor mounting bracket to provide stable power. The rotational speed and angle of the rotating disk are precisely controlled by the rotating rod, eliminating the need for manual adjustment. The clamping and positioning time is reduced from 10-15 minutes to 1-2 minutes, and the number of workpieces processed per person per hour increases from 4-6 to 15-20, representing a 300% increase in efficiency. The equidistant arc-shaped grooves on the circumference of the rotating disk, in conjunction with the rotating roller on the outer wall of the mounting rod, convert rotational motion into radial synchronous movement of the inner support slider. This causes the inner support clamping block to apply uniform pressure from the inner wall of the workpiece, preventing workpiece deformation caused by localized stress concentration. Simultaneously, the limiting groove of the rotating limiting fixing block slides with the rotating disk, ensuring no radial offset during rotation. The roundness error of the processed workpiece is ≤0.008mm, improving accuracy by 70%, which can meet the processing requirements of high-precision workpieces such as precision bearing rings and hydraulic cylinder barrels.

[0022] 2. This utility model utilizes the sliding cooperation between the rectangular groove on the inner support bracket and the inner support slider. When the rotating disk rotates, the arc-shaped groove drives the inner support slider to move radially along the rectangular groove through the rotating roller. This enables the clamping of workpieces of different specifications within the inner diameter range of 20-150mm without the need to change the fixture, reducing the adaptation cost by 40%. Furthermore, the connecting fixing blocks are equidistantly distributed around the circumference to ensure that the inner support slider moves synchronously, with a workpiece center positioning deviation of ≤0.02mm, avoiding processing scrap due to positioning offset.

[0023] 3. This utility model features a rubber sliding block within the sliding groove of the inner support clamping block. The grinding groove on its outer wall increases friction by 30%, preventing workpiece slippage during processing. Simultaneously, the rubber sliding block is connected to a spring via a sliding rod. When the clamping force is too large, the spring is compressed to buffer the impact, avoiding surface indentations caused by hard metal contact. After processing, the workpiece surface roughness Ra ≤ 0.8μm, eliminating the need for subsequent polishing. The surface damage rate is reduced from 8% to below 1%, significantly improving the workpiece appearance and surface quality. Attached Figure Description

[0024] Figure 1 This is a frontal perspective view of the overall structure of this utility model;

[0025] Figure 2 This is a partial view of the positioning and rotation drive unit of this utility model;

[0026] Figure 3 This is a partial view of the limiting inner support clamping part of this utility model;

[0027] Figure 4 This is a partial view of the rubber sliding block of this utility model.

[0028] In the figure, 1 is a fixed base, 2 is the grinding machine body, 3 is a positioning and rotating drive unit, 311 is a motor fixing frame, 312 is a drive motor, 313 is a rotating rod, 314 is a rotation limit fixing block, 315 is a limit slide groove, 316 is a rotating disk, 317 is an arc-shaped slide groove, 4 is a limit inner support clamping part, 411 is a connecting fixing block, 412 is an inner support bracket, 413 is an inner support slider, 414 is a rectangular slide groove, 415 is a sliding passage, 416 is a rotating roller, 417 is a fixing rod, 418 is a limit round block, 419 is an inner support clamping block, 4111 is a sliding groove, 4112 is a limit block, 4113 is a slide rod, 4114 is a rubber sliding block, and 4115 is a spring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] Example 1:

[0032] A preferred embodiment of the surface grinder fixture provided by this utility model is as follows: Figures 1-4 As shown: A surface grinder tooling fixture includes a fixed base 1, a positioning and rotating drive unit 3, and a limiting inner support clamping unit 4. The top outer wall of the fixed base 1 is provided with a grinding machine body 2. The positioning and rotating drive unit 3 is provided on one side of the outer wall of the fixed base 1, and the limiting inner support clamping unit 4 is provided on the other side of the outer wall of the fixed base 1.

[0033] The positioning and rotation drive unit 3 specifically includes: a motor mounting bracket 311, which is disposed on one outer wall of the fixed base 1; a rotation limit fixing block 314, which is disposed on the other outer wall of the fixed base 1; and a drive motor 312, which is fixedly installed inside the motor mounting bracket 311.

[0034] The motor mounting bracket 311 is fixedly installed on one side of the outer wall of the fixed base 1, and the output end of the drive motor 312 is fixedly connected to the rotating rod 313.

[0035] The other end of the rotating rod 313 moves through one side of the outer wall of the fixed base 1 and extends to the other side of the outer wall of the fixed base 1. The other end of the rotating rod 313 is fixedly connected to a rotating disk 316. The rotating disk 316 is provided with arc-shaped grooves 317 at equal intervals around its circumference. The rotating limiting fixing block 314 is fixedly installed on the other side of the outer wall of the fixed base 1 at equal intervals around its circumference. The rotating limiting fixing block 314 is provided with limiting grooves 315 inside. The rotating disk 316 is slidably connected to the limiting grooves 315.

[0036] In this embodiment, the drive motor 312 starts and drives the rotating disk 316 to rotate via the rotating rod 313. The arc-shaped groove 317 on the rotating disk 316 cooperates with the rotating roller 416 to convert the rotational motion into the radial movement of the fixed rod 417. The fixed rod 417 pushes the inner support slider 413 to slide outward in the rectangular groove 414, thereby driving the inner support clamping block 419 to expand synchronously. The inner support clamping block 419 applies pressure evenly to the inner wall of the workpiece through the rubber sliding block 4114 to achieve clamping. The limiting groove 315 of the rotating limiting fixed block 314 is slidably connected to the rotating disk 316 to ensure the stability and positioning accuracy of the rotating disk 316 during rotation. It can achieve equidistant positioning in the circumferential direction, which is very advantageous for situations where uniform processing is required on the circumference of the workpiece. It can ensure the uniformity and symmetry of processing and improve the overall quality of the product.

[0037] Example 2:

[0038] Please see Figures 1-4 Furthermore, based on Embodiment 1, the limiting inner support clamping part 4 specifically includes: a connecting fixing block 411, which is circumferentially and equidistantly fixedly installed on the outer wall of the other side of the fixing base 1; an inner support bracket 412, which is fixedly installed on the outer wall of the connecting fixing block 411; and a rectangular sliding groove 414, which is circumferentially and equidistantly opened on the outer wall of the inner support bracket 412.

[0039] The inner wall of the rectangular slide groove 414 is provided with a sliding opening 415. An inner support slider 413 is slidably connected inside the rectangular slide groove 414. A fixing rod 417 is fixedly installed on one outer wall of the inner support slider 413. The other end of the fixing rod 417 extends into the interior of the arc-shaped slide groove 317 through the sliding opening 415. A limit block 418 is fixedly installed on the other end of the fixing rod 417.

[0040] The limiting block 418 is set on the outer wall of the rotating disk 316, and the rotating roller 416 is movably sleeved on the outer wall of the fixing rod 417. The rotating roller 416 slides on the inner wall of the sliding passage 415. The rotating roller 416 is adapted to the arc-shaped slide groove 317. The rotating roller 416 slides inside the arc-shaped slide groove 317. An inner support clamping block 419 is fixedly installed on the outer wall of the other side of the inner support slider 413.

[0041] Each inner support clamping block 419 is provided with a sliding groove 4111. A rubber sliding block 4114 is slidably connected inside the sliding groove 4111. The outer wall of the rubber sliding block 4114 is provided with a grinding groove. A sliding rod 4113 is fixedly connected to the other outer wall of the rubber sliding block 4114. The other end of the sliding rod 4113 movably passes through the inner wall of the sliding groove 4111 and extends to the outer wall of the inner support clamping block 419. A limit block 4112 is fixedly installed at the other end of the sliding rod 4113. A spring 4115 is movably sleeved on the outer wall of the sliding rod 4113. One end of the spring 4115 is fixedly connected to the outer wall of the rubber sliding block 4114, and the other end of the spring 4115 is fixedly connected to the inner wall of the sliding groove 4111.

[0042] In this embodiment, the drive motor 312 reverses, the rotating disk 316 rotates in the opposite direction, the arc-shaped slide 317 pulls the fixed rod 417 inward through the rotating roller 416, the inner support slider 413 drives the inner support clamping block 419 to retract synchronously, the spring 4115 pushes the rubber sliding block 4114 to reset, release the workpiece, take out the processed workpiece, and complete the entire workflow. This makes the contact between the fixture and the workpiece flexible. The grinding groove on the rubber sliding block increases the friction, while the spring's buffering effect can prevent hard damage to the workpiece surface caused by the inner support clamping block. It can be adjusted according to the inner diameter of different workpieces, thereby adapting to the clamping of workpieces of various specifications and improving the versatility of the fixture.

[0043] Working principle: The operator places the ring / cylindrical workpiece to be processed on the outside of the inner support clamping block 419 of the limiting inner support clamping part 4, ensuring that the inner wall of the workpiece is in full contact with the rubber sliding block 4114 on the inner support clamping block 419.

[0044] The groove on the outer wall of the rubber sliding block 4114 fits against the inner wall of the workpiece, providing initial friction and initially restricting the axial and radial movement of the workpiece. At this time, the spring 4115 on the outer wall of the slide rod 4113 is in its natural state, and the rubber sliding block can move slightly within the sliding groove 4111 to adapt to the small irregular structure of the inner wall of the workpiece and ensure initial positioning stability.

[0045] Start the drive motor 312 inside the motor fixing bracket 311 in the positioning rotation drive unit 3, and the output end of the drive motor drives the rotating rod 313 to rotate around the through hole of the fixed base 1;

[0046] The rotating disk 316 at the other end of the rotating rod 313 rotates synchronously. The arc-shaped grooves 317 equidistantly opened on the circumference of the rotating disk 316 slide in cooperation with the rotating roller 416 on the outer wall of the fixed rod 417, converting the rotational motion into the radial outward movement of the fixed rod 417.

[0047] The fixed rod 417 drives the inner support slider 413 to slide outward synchronously along the rectangular slide groove 414 of the inner support bracket 412. The inner support clamping block 419 on the other side of the inner support slider 413 expands inward accordingly. The rubber sliding block 4114 applies a uniform clamping force to the inner wall of the workpiece. The clamping force can be adjusted by the speed of the drive motor.

[0048] At the same time, the rotating disk 316 is slidably connected to the limiting groove 315 of the rotating limiting fixing block 314, which restricts the radial offset of the rotating disk, ensures that the inner support clamping block 419 expands synchronously, and the workpiece center positioning deviation is ≤0.02mm, thus completing precise clamping.

[0049] Start the grinding machine body 2 on the top of the fixed base 1. The grinding mechanism descends to the surface of the workpiece to be processed and begins the surface grinding operation.

[0050] According to the processing requirements, the drive motor 312 is controlled to drive the rotating disk 316 to rotate slowly at a preset speed of 5-20 r / min with fluctuation ≤1 r / min. The rotating disk drives the workpiece to rotate synchronously through the inner support clamping block 419, so as to achieve uniform grinding of the workpiece circumferential surface.

[0051] During the grinding process, the rotating roller 416 slides smoothly within the arc-shaped groove 317 and the sliding passage 415, while the inner support slider 413 maintains a stable radial position, ensuring that the clamping force remains unchanged and the workpiece does not slip or deform.

[0052] After processing is completed, the grinding machine body 2 is shut down, the drive motor 312 is reversed, and the rotating rod 313 and the rotating disk 316 are rotated in opposite directions.

[0053] The arc-shaped slide 317 pulls the fixed rod 417 radially inward through the rotating roller 416, the inner support slider 413 moves inward along the rectangular slide 414, the inner support clamping block 419 retracts synchronously, and the rubber sliding block 4114 disengages from the inner wall of the workpiece.

[0054] Spring 4115 pushes rubber sliding block 4114 to reset along sliding groove 4111, and operator takes out the processed workpiece to complete a single processing flow.

[0055] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A surface grinder tooling fixture, comprising a fixed base (1), a positioning and rotating drive unit (3), and a limiting inner support clamping unit (4), characterized in that: The top outer wall of the fixed base (1) is provided with a grinding machine body (2), the positioning rotation drive part (3) is provided on one side outer wall of the fixed base (1), and the limiting inner support clamping part (4) is provided on the other side outer wall of the fixed base (1). The positioning rotation drive unit (3) specifically includes: The motor mounting bracket (311) is installed on one side of the outer wall of the fixed base (1); Rotation limit fixing block (314) is set on the outer wall of the other side of the fixing base (1); The drive motor (312) is fixedly installed inside the motor mounting bracket (311); The motor mounting bracket (311) is fixedly installed on one side of the outer wall of the fixed base (1), and the output end of the drive motor (312) is fixedly connected to a rotating rod (313). The other end of the rotating rod (313) movably passes through one side of the outer wall of the fixed base (1) and extends to the other side of the outer wall of the fixed base (1). The other end of the rotating rod (313) is fixedly connected to a rotating disk (316). The rotating disk (316) is provided with arc-shaped sliding grooves (317) at equal intervals around its circumference. The rotating limiting fixing block (314) is fixedly installed on the other side of the outer wall of the fixed base (1) at equal intervals around its circumference. The rotating limiting fixing block (314) is provided with limiting sliding grooves (315) inside. The rotating disk (316) is slidably connected to the limiting sliding grooves (315). The limiting inner support clamping part (4) specifically includes: The connecting fixing block (411) is circumferentially and equidistantly fixed on the outer wall of the fixing base (1) on the other side; The inner support bracket (412) is fixedly installed on the outer wall of the connecting fixing block (411); A rectangular groove (414) is circumferentially and equidistantly formed on the outer wall of the inner support bracket (412); The inner wall of the rectangular slide groove (414) is provided with a sliding opening (415). The inner support slider (413) is slidably connected inside the rectangular slide groove (414). A fixing rod (417) is fixedly installed on one outer wall of the inner support slider (413). The other end of the fixing rod (417) extends into the interior of the arc-shaped slide groove (317) through the sliding opening (415). A limit block (418) is fixedly installed on the other end of the fixing rod (417). The limiting block (418) is set on the outer wall of the rotating disk (316), and the rotating roller (416) is movably sleeved on the outer wall of the fixing rod (417). The rotating roller (416) slides on the inner wall of the sliding port (415). The rotating roller (416) is adapted to the arc-shaped slide groove (317). The rotating roller (416) slides inside the arc-shaped slide groove (317). An inner support clamping block (419) is fixedly installed on the outer wall of the other side of the inner support slider (413).

2. The surface grinder fixture according to claim 1, characterized in that: Each of the inner support clamping blocks (419) is provided with a sliding groove (4111). A rubber sliding block (4114) is slidably connected inside the sliding groove (4111). A grinding groove is provided on the outer wall of the rubber sliding block (4114). A sliding rod (4113) is fixedly connected to the other outer wall of the rubber sliding block (4114). The other end of the sliding rod (4113) movably passes through the inner wall of the sliding groove (4111) and extends to the outer wall of the inner support clamping block (419). A limit block (4112) is fixedly installed on the other end of the sliding rod (4113). A spring (4115) is movably sleeved on the outer wall of the sliding rod (4113). One end of the spring (4115) is fixedly connected to the outer wall of the rubber sliding block (4114), and the other end of the spring (4115) is fixedly connected to the inner wall of the sliding groove (4111).

Images